Finite Math Examples

Solve the Matrix Equation [[3,-3],[2,-1]]*[[a,b],[c,d]]=[[-12,-3],[-4,2]]
Step 1
Multiply .
Tap for more steps...
Step 1.1
Two matrices can be multiplied if and only if the number of columns in the first matrix is equal to the number of rows in the second matrix. In this case, the first matrix is and the second matrix is .
Step 1.2
Multiply each row in the first matrix by each column in the second matrix.
Step 2
Write as a linear system of equations.
Step 3
Solve the system of equations.
Tap for more steps...
Step 3.1
Solve for in .
Tap for more steps...
Step 3.1.1
Add to both sides of the equation.
Step 3.1.2
Divide each term in by and simplify.
Tap for more steps...
Step 3.1.2.1
Divide each term in by .
Step 3.1.2.2
Simplify the left side.
Tap for more steps...
Step 3.1.2.2.1
Cancel the common factor of .
Tap for more steps...
Step 3.1.2.2.1.1
Cancel the common factor.
Step 3.1.2.2.1.2
Divide by .
Step 3.1.2.3
Simplify the right side.
Tap for more steps...
Step 3.1.2.3.1
Simplify each term.
Tap for more steps...
Step 3.1.2.3.1.1
Divide by .
Step 3.1.2.3.1.2
Cancel the common factor of .
Tap for more steps...
Step 3.1.2.3.1.2.1
Cancel the common factor.
Step 3.1.2.3.1.2.2
Divide by .
Step 3.2
Replace all occurrences of with in each equation.
Tap for more steps...
Step 3.2.1
Replace all occurrences of in with .
Step 3.2.2
Simplify the left side.
Tap for more steps...
Step 3.2.2.1
Simplify .
Tap for more steps...
Step 3.2.2.1.1
Simplify each term.
Tap for more steps...
Step 3.2.2.1.1.1
Apply the distributive property.
Step 3.2.2.1.1.2
Multiply by .
Step 3.2.2.1.2
Subtract from .
Step 3.3
Move all terms not containing to the right side of the equation.
Tap for more steps...
Step 3.3.1
Add to both sides of the equation.
Step 3.3.2
Add and .
Step 3.4
Replace all occurrences of with in each equation.
Tap for more steps...
Step 3.4.1
Replace all occurrences of in with .
Step 3.4.2
Simplify .
Tap for more steps...
Step 3.4.2.1
Simplify the left side.
Tap for more steps...
Step 3.4.2.1.1
Remove parentheses.
Step 3.4.2.2
Simplify the right side.
Tap for more steps...
Step 3.4.2.2.1
Add and .
Step 3.5
Solve for in .
Tap for more steps...
Step 3.5.1
Add to both sides of the equation.
Step 3.5.2
Divide each term in by and simplify.
Tap for more steps...
Step 3.5.2.1
Divide each term in by .
Step 3.5.2.2
Simplify the left side.
Tap for more steps...
Step 3.5.2.2.1
Cancel the common factor of .
Tap for more steps...
Step 3.5.2.2.1.1
Cancel the common factor.
Step 3.5.2.2.1.2
Divide by .
Step 3.5.2.3
Simplify the right side.
Tap for more steps...
Step 3.5.2.3.1
Simplify each term.
Tap for more steps...
Step 3.5.2.3.1.1
Divide by .
Step 3.5.2.3.1.2
Cancel the common factor of .
Tap for more steps...
Step 3.5.2.3.1.2.1
Cancel the common factor.
Step 3.5.2.3.1.2.2
Divide by .
Step 3.6
Replace all occurrences of with in each equation.
Tap for more steps...
Step 3.6.1
Replace all occurrences of in with .
Step 3.6.2
Simplify the left side.
Tap for more steps...
Step 3.6.2.1
Simplify .
Tap for more steps...
Step 3.6.2.1.1
Simplify each term.
Tap for more steps...
Step 3.6.2.1.1.1
Apply the distributive property.
Step 3.6.2.1.1.2
Multiply by .
Step 3.6.2.1.2
Subtract from .
Step 3.7
Move all terms not containing to the right side of the equation.
Tap for more steps...
Step 3.7.1
Add to both sides of the equation.
Step 3.7.2
Add and .
Step 3.8
Replace all occurrences of with in each equation.
Tap for more steps...
Step 3.8.1
Replace all occurrences of in with .
Step 3.8.2
Simplify .
Tap for more steps...
Step 3.8.2.1
Simplify the left side.
Tap for more steps...
Step 3.8.2.1.1
Remove parentheses.
Step 3.8.2.2
Simplify the right side.
Tap for more steps...
Step 3.8.2.2.1
Add and .
Step 3.9
List all of the solutions.