7+x-4x=20

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Solution for 7+x-4x=20 equation: 


Simplifying
7 + x + -4x = 20

Combine like terms: x + -4x = -3x
7 + -3x = 20

Solving
7 + -3x = 20

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '-7' to each side of the equation.
7 + -7 + -3x = 20 + -7

Combine like terms: 7 + -7 = 0
0 + -3x = 20 + -7
-3x = 20 + -7

Combine like terms: 20 + -7 = 13
-3x = 13

Divide each side by '-3'.
x = -4.333333333

Simplifying
x = -4.333333333

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