91Ó°ÊÓ

Solve the equation using mental math.

$x−10=7$

Which equation illustrates the identity property of multiplication?

What are terms that have a number but no variable called?

Copy and complete: A(n) _?_ of an equation is a number that produces a true statement when it is substituted for the variable.

Use the distributive property to evaluate the expression.

$3\left(106\right)$

Perform the indicated operation.

$-  75  ÷  \left(-  5\right)$

Solve the equation. Check your solution.

$y+9=0$

Perform the indicated operation.

$7.8+\left(-9.3\right)$

Use the distributive property to evaluate the following expression:

$6\left(99\right)$

Tell whether the given value of the variable is a solution of the equation.

$21-z=-  4;  z=25$