y = 3x + 8
Replace x with y and y with x.
x = 3y + 8
Solve for y.
x - 8 = 3y
3y = x - 8
y = (x-8)/3
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3x+11+5x=75(add 5x and 3x) 8x+11=75(-11) 8x=64(/ 8) x=8(ANSWER)
3x+5 = 2x+13 3x-2x = 13-5 x = 8
If: 3x+8 = 14 Then: 3x = 14-8 So: 3x = 6 Divide both sides by 3: x = 2
3x + 2y = 8 This is an equation. It could be the equation of a line.
3x + 2x = 40 5x = 40 x = 8