2x + 9
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x=-9 15 + x = 6x + 60 x = 6x + 45 -5x = 45 x = -9 15 + (-9) = (6 * (-9)) + 60 15 - 9 = -54 + 60 6 = 60 - 54 6 = 6 There is no answer because, 15+x=6x+60 -15 -15 x=6x+45 Which is imposible because "x" can't equal itself times six plus forty-five.
x=9 squared
-12 = x+9 x+9 -9 = -12 -9 x = -21
5x = 4x + 9 x = 9
x=9 y=1