1) (X - 12) * 11 = 77X - 12 = 77 / 11X - 12 = 7X = 7 + 12X = 19
2) 96 / (80 / X) = 696 / (80 / X) = 696 / 80 X = 61.2 X = 6X = 6 / 1.2X = 5
1) (X - 12) * 11 = 77
X - 12 = 77 / 11
X - 12 = 7
X = 7 + 12
X = 19
2) 96 / (80 / X) = 6
96 / (80 / X) = 6
96 / 80 X = 6
1.2 X = 6
X = 6 / 1.2
X = 5