Which properties of equality are used to solve the following? 2(x - 12) + 2 = 40 a) addition property of equality b) subtraction property of equality c) combine like terms d) distributive property e) division property of equality this is multiple choice.

Equation: 2(x - 12) + 2 = 40

1. E) Division property of equality: Allows us to divide the whole equation, here, by 2, which gives us x - 12 + 1 = 20

2. C) Combine like terms: Allows us to combine like terms, here, combining on the left side of the equation gives us x - 11 = 20

3. A) Addition property of equality: Allows us to subtract the whole equation, here, by 11, gives us x = 31

the answer is b.)

< 1=< 2

m∠a is 90°

m∠b is 40°