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2x-4 = 20 2x = 20+4 2x = 24 x = 12
If you mean: -2x+8+20 then it can be simplified to 28-2x
The slope will be the same but the y intercept will change:- y -14 = - 2(x - 10) y -14 = -2x +20 y = -2x +20 +14 y = -2x +34
-2x+20 = 3x 20 = 3x+2x 20 = 5x 4 = x So x = 4
2x-6y = 20 -6y = -2x+20 y = 1/3x-20/6 The slope is 1/3