(x + 7) / 8 = x + 7 = 9 * x + 7 = 7x = 72 - x = 65
9 * (x + 6) = 79x + 54 = 79x = 72 - 59x = 1x = 18 / x = 2
6x + 11x + 15 = 3217x + 15 = 3217x = 321 - 117x = 30x = 306 / 1x = 18
(x + 7) / 8 =
x + 7 = 9 *
x + 7 = 7
x = 72 -
x = 65
9 * (x + 6) = 7
9x + 54 = 7
9x = 72 - 5
9x = 1
x = 18 /
x = 2
6x + 11x + 15 = 32
17x + 15 = 32
17x = 321 - 1
17x = 30
x = 306 / 1
x = 18