The 'answer' is the number that 'x' must be
in order to make the statement true.
-9x + 1 = -80
Subtract 1 from each side of the equation:
-9x = -81
Divide each side by -9 :
x = 9
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9x + 7 = 15x + 1 ___-1_______-1 9x + 6 = 15x -9x_____-9x ____6=6x ____/6_/6 ____1=x x equals 1.
2x + 5x - 1 = 9x 7x - 1 = 9x -1 = 9x - 7x -1 = 2x -1/2=x
9x + 3 - 6x - 2 = 3x + 1
9x-11 = 6x+1 9x-6x = 1+11 3x = 12 x = 4
x - 10x = 9x, so 9x + 3 = 0, so 9x = -3 so x = -1/3