Answer:
7
Step-by-step explanation:
10x+2=72 can be solved by the following manipulations
10x = 72 - 2
10x = 70
x = 70/10
x = 7
72 = 10x + 2 subtract 2 from both sides
72 - 2 = 10x + 2 - 2
70 = 10x divide both sides by 10
70/10 = 10x/10
7 = x
