× = 12, which equation is true?

Question

Responses
A 3(20 – x) = 303(20 – x ) = 30
B 2(x – 3) = 222( x – 3) = 22
C 3(14 – x) = 63(14 – x ) = 6
D 2x – 3 = 22

Answer 1

To determine which equation is true, we can substitute the value of x into each equation and see which one results in 12.

A: 3(20 - x) = 30
If we substitute x = 8, we get: 3(20 - 8) = 3(12) = 36
This equation is not true.

B: 2(x - 3) = 22
If we substitute x = 8, we get: 2(8 - 3) = 2(5) = 10
This equation is not true.

C: 3(14 - x) = 6
If we substitute x = 2, we get: 3(14 - 2) = 3(12) = 36
This equation is not true.

D: 2x - 3 = 22
If we substitute x = 12, we get: 2(12) - 3 = 24 - 3 = 21
This equation is not true.

None of the given equations are true when x = 12.