1)set 2-8x equal to 10x+20
2) like term - add or subtract
3)after u combined like terms, move (X) to either side
4) now divide, the left over, {x divide the whole number}
EX:2-8x=10x+20
-20 - -20
-18-8x= 10x
+8x +8x
-18=18x
x=-1
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7x+7=28x 28x-7x=7 21x=7 x=3
68 + 28x - 28 = 236 28x + 68 - 68 -28 + 28 = 236 - 68 + 28 28x = 196 x = 7
9x2 - 28x + 20 = 9x2 - 18x - 10x + 20 = 9x(x - 2) - 10(x - 2) = (9x - 10)*(x - 2)
8x-17=6x+112x=28x=14