7x-20=3x-4

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Solution for 7x-20=3x-4 equation:


Simplifying
7x + -20 = 3x + -4

Reorder the terms:
-20 + 7x = 3x + -4

Reorder the terms:
-20 + 7x = -4 + 3x

Solving
-20 + 7x = -4 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
-20 + 7x + -3x = -4 + 3x + -3x

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

Combine like terms: 3x + -3x = 0
-20 + 4x = -4 + 0
-20 + 4x = -4

Add '20' to each side of the equation.
-20 + 20 + 4x = -4 + 20

Combine like terms: -20 + 20 = 0
0 + 4x = -4 + 20
4x = -4 + 20

Combine like terms: -4 + 20 = 16
4x = 16

Divide each side by '4'.
x = 4

Simplifying
x = 4

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