Question

Solve for x using
cross multiplication.
3x – 5
4
x + 1
x = [?]

Answer 1

x = 7

Explanation:

`(3x - 5)/(4) = (x + 1)/(2) \\ 2(3x - 5) = 4(x + 1) \\ 6x - 10 = 4x + 4 \\ 6x - 4x = 4 + 10 \\ 2x = 14 \\ \: \: \: x = (14)/(2) \\ x = 7`

Answer 2

x=7

Explanation:

3x-5/4=x+1/2

3x-5=2(x+1)

3x-5=2x+2

3x=2x+2+5

3x=2x+7

3x-2x=7

x=7