Q: What is 4x plus -12 equals 8?

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x=5

x=3

Only if 4 dollars plus 4 dollars equals 8 dollars.And if you had another 4x, you'd have a dozen-x.

Simplify 4x + 3 = 2x + 8 2x = 5 x =2½

2y = 4x - 16 5y = 4x + 8 Subtract the first equation from the second: 3y = 24 so that y = 8 Substitute this into the first equation: 16 = 4x - 16 ie 32 = 4x so that x = 8 So the solution is (8, 8)

Related questions

-4x + 8 = -4 -4x + 8 - 8 = -4 -8 -4x = -12 -4x/-4 = -12/-4 x = 3

X=5/12

x = -8, y = 10

x = 11/7 and y = 12/7

4x+32=-4x+16x4x+32=12x-4x -4x32=8x/8 /84=x

4x + 8 + 7x + 12 = 11x + 20

8-3x-x = 12 8-4x = 12 -4x = 12-8 -4x = 4 x = -1

-4x - 8 = -2x + 12Add 4x to each side:-8 = 2x + 12Subtract 12 from each side:-20 = 2xDivide each side by 2:-10 = x

4x - 8 = 12 + 6x 4x - 6x = 12 + 8 -2x = 20 -x = 20/2 x = -10 Check: 4(-10) - 8 = 12 + 6(-10) -40 - 8 = 12 + -60 -48 = -48

9x + 8 = 4x + 23Subtract 8 from both sides9x = 4x + 15Subtract 4x from both sides5x = 15Divide both sides by 5x = 3

Add 12 to each side: 4x + 6x = 20 ie 10x = 20 so x = 2

x=5