Question

evaluate the expression when (b = - 7) and (x = 7).
(-2b + x)

Explanation:

Step1: Substitute values

Substitute $b = - 7$ and $x = 7$ into $-2b + x$.
$-2\times(-7)+7$

Step2: Calculate multiplication

Calculate $-2\times(-7)$.
$14 + 7$

Step3: Calculate addition

Calculate $14+7$.
$21$

Answer:

$21$