Chapter 3 - Section 3.2 - Solving Equations: Review of the Addition and Multiplication Properties - Vocabulary, Readiness & Video Check - Page 179: 39

$x=-11$

$-3(x+1)-10=12+8$ $\longrightarrow$distributive property; simplify $-3x-3-10=12+8$ $\longrightarrow$simplify $-3x-13=20$ $\longrightarrow$addition property $-3x-13+13=20+13$ $\longrightarrow$simplify $-3x=33$ $\longrightarrow$multiplication property $-3x\div-3=33\div-3$ $\longrightarrow$simplify $x=-11$