Question

How do i find the value of x on this problem?

Answer 1

x = 7

Explanation:

The proportion is

14/6 = 21/(3x - 12) Cross Multiply

14*(3x - 12) = 6*21 Remove the brackets and combine

42x - 168 = 126 Add 168 to both sides

42x = 126 + 168

42x = 294 Divide by 42

x = 294/42

x = 7