7x-3x=20-4

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


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

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

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

Solving
4x = 16

Solving for variable 'x'.

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

Divide each side by '4'.
x = 4

Simplifying
x = 4

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