Question

What is 7c+12=-4c+78

Answer 1

c = 6

Explanation:

7c + 12 = -4c + 78

subtract 12 from both sides:

7c + 12 - 12 = -4c + 78 - 12

7c = -4c + 66

add 4c to both sides:

7c+ 4c = -4c + 66 + 4c

11c = 66

divide both sides by 11:

11c/11 = 66/11

c = 6