Finite Math Examples

Solve Using an Augmented Matrix 7x+4y=8 , y=-7/4x+2
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Step 1
Move variables to the left and constant terms to the right.
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Step 1.1
Add to both sides of the equation.
Step 1.2
Combine and .
Step 1.3
Reorder terms.
Step 1.4
Reorder and .
Step 2
Write the system as a matrix.
Step 3
Find the reduced row echelon form.
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Step 3.1
Multiply each element of by to make the entry at a .
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Step 3.1.1
Multiply each element of by to make the entry at a .
Step 3.1.2
Simplify .
Step 3.2
Perform the row operation to make the entry at a .
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Step 3.2.1
Perform the row operation to make the entry at a .
Step 3.2.2
Simplify .
Step 4
Use the result matrix to declare the final solution to the system of equations.
Step 5
The solution is the set of ordered pairs that make the system true.