Answer:
x = 7
Step-by-step explanation:
3(2x - 10) + 4(x-7)= 12
6x - 30 + 4x - 28 = 12
combine x terms on left side:
10x - 30 - 28 = 12
combine numbers on left side:
10x - 58 = 12
add 58 to both sides:
10x - 58 + 58 = 12 + 58
10x = 70
divide both sides by 10:
10x/10 = 70/10
x = 7
