Finite Math Examples

$9 = - 7 \cdot 8 + b$

Step 1

Rewrite the equation as $- 7 \cdot 8 + b = 9$ .

$- 7 \cdot 8 + b = 9$

Step 2

Multiply $- 7$ by $8$ .

$- 56 + b = 9$

Step 3

Move all terms not containing $b$ to the right side of the equation.

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Step 3.1

Add $56$ to both sides of the equation.

$b = 9 + 56$

Step 3.2

Add $9$ and $56$ .

$b = 65$