Question

linear equations w/ distribution (lev 3) score: 1/4 penalty: none question solve for $x$: $-(10x + 10)=7 + 3(-10x - 8)$ answer attempt 1 out of 2 $x=$

Explanation:

Step1: Distribute on both sides

$-10x - 10=7+3\times(- 10x)+3\times(-8)$
$-10x - 10=7 - 30x-24$

Step2: Simplify the right - hand side

$-10x - 10=-30x - 17$

Step3: Add $30x$ to both sides

$-10x+30x - 10=-30x+30x - 17$
$20x - 10=-17$

Step4: Add 10 to both sides

$20x-10 + 10=-17 + 10$
$20x=-7$

Step5: Divide both sides by 20

$x=\frac{-7}{20}$

Answer:

$x =-\frac{7}{20}$