9 x 15 = 135
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x-9 = 15 x = 15+9 x = 24
x/5 = 9/15 15 x = 45 x = 3
(3x - 9 =15) +9 = 3x=(24)/3 = x=8 x=8
n X .15 = 9 9 / .15 = n 9 / .15 = 60
x + 6 = 2x - 9 Add 9 to both sides: x + 15 = 2x Subtract 1x from both sides: 15 = 1x or 15 = x