9*27 = 243
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9x-27=7x-1 9x-7x= -1+27 26=2x x=26 / 2 therefore x=13
That is an equation.Oh, you wanted to know for which values of x that equation is true? Okay...6x + 3x + 8 = 35⇔ (6x + 3x) + 8 = 35⇔ 9x + 8 = 35⇔ 9x + 8 - 8 = 35 - 8⇔ 9x + 0 = 27⇔ 9x = 27⇔ 9x / 9 = 27 / 9⇔ x = 27 / 9⇔ x = 3
9x - 20 = 7 9x = 27 x = 3
3x-3y=-9 and 9x-9y=-27 both simplifies to x-y=-3.
144