Solve the equation 4(0.2x – 5) = 12.

Question

A. x = –10
B. x = 4
C. x = 13.75
D. x = 40

Answer 1

To solve the equation 4(0.2x - 5) = 12, begin by distributing the 4 on the left side:

4(0.2x) - 4(5) = 12
0.8x - 20 = 12

Now, add 20 to both sides to isolate the term with x:

0.8x = 32

Finally, divide both sides by 0.8 to solve for x:

x = 32 / 0.8
x = 40

Therefore, the correct answer is:
D. x = 40