Question

Select the equation(s), where 9 is a solution.

A 9+3x=36

B 57=6x+3

C 4x+3=43

D4x=49

Answer 1

a and b

Explanation:

a)

9+3x=36

3x=27

x=9

b)

57=6x+3

54=6x

9=x

c)

4x+3=43

4x=40

x=10

d)

4x=49

x=12.25