Question

Simplify the following expressions and then find the numerical values for x = -2.

i) 3(2x – 4)+2 + 5

ii) -2(-3x + 5) – 2(x + 4)​

Answer 1

Step-by-step explanation:

i) 3(2x – 4)+2 + 5

6x-12+2+5

6(-2)-12+2+5= -12-12+2+5= -25+7= -18

ii) -2(-3x + 5) – 2(x + 4)

6x-10-2x-8

6(-2)-10-2(-2)-8

-12-10+4-8= -22-4= -26