3(4d+1)-9d=6(2-d)
Multi step equation, pre algebra
3(4d + 1) - 9d = 6(2 - d)
12d + 3 - 9d = 12 - 6d
3d + 6d = 12 - 3
9d = 9
d = 1
To check the answer:
3(4d + 1) - 9d = 6(2 - d)
3(4(1) + 1) - 9(1) = 6(2 - (1))
3(4 + 1) - 9 = 6(1)
3(5) - 9 = 6(1)
15 - 9 = 6
6 = 6