x + 20 + 10x = 20 + 9x
11x + 20 = 20 + 9x
Subtract 20 from both sides: 11x = 9x
Subtract 9x from both sides: 2x = 0
Divide both sides by 2: x = 0
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10x = 9x -25 10x -9x = -25 x = -25
10x=x 9x=0 x=0
If x equals 10 and y equals 10, then 9x plus 8y equals 170.
9x+27 = -81 9x = -81-27 9x = -108 x = -12
x2=9x-20 x2-9x+20=0 Factor: (x-4)(x-5)=0 x={4,5}