Simplify this expression: -8w+(-4z)+2+6w+9z-7

Write two subtraction equations that are equivalent to 5 + 12 = 17.

The perimeter of a movie screen is 54 meters. the screen is 18 meters wide. how tall is it?

What is the next step in the given proof? choose the most logical approach. a. statement: m 1 + m 2 + 2(m 3) = 180° reason: angle addition b. statement: m 1 + m 3 = m 2 + m 3 reason: transitive property of equality c. statement: m 1 = m 2 reason: subtraction property of equality d. statement: m 1 + m 2 = m 2 + m 3 reason: substitution property of equality e. statement: 2(m 1) = m 2 + m 3 reason: substitution property of equality