Question

4. For each equation, determine if =-2 is a solution. Explain or show your reasoning.

a) 10 = 2(x-9)


b) 3(x+4) = 2(x+3) + 4

Answer 1

a. 14 b. -2

Explanation:

a. 10=2x-18

28=2x ; x=14

b. 3x+12=2x+6+4

3x+12=2x+10

x=-2