Q: What is the answer to 4 plus 2x equals 20?

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2x + x + 4 +2x = x + 20 5x + 4 = x + 20 5x - x = 20 - 4 4x = 16 x = 4

-2x+20 = 3x 20 = 3x+2x 20 = 5x 4 = x So x = 4

2x+4 = -16 2x = -16-4 2x = -20 x = -10

2x + (10x - 4) = 20 2x + 10x - 4 = 20 12x - 4 = 20 12x = 24 x = 2

2x-4 = 20 2x = 20+4 2x = 24 x = 12

x equals 4

If x=4 then 2x+7 =

-2x = 20 + 5y-2x - 20 = 5y-2/5x - 4 = yX Intercept = (-10,0) or -10Y Intercept = (0,-4) or -4

y=16 x= -4

add; 5x =20 so x = 4

3x+56 = 2x+4 3x-2x = 4-56 x = -52

x=-4

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