7x-3x-8=4

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Solution for 7x-3x-8=4 equation: 


Simplifying
7x + -3x + -8 = 4

Reorder the terms:
-8 + 7x + -3x = 4

Combine like terms: 7x + -3x = 4x
-8 + 4x = 4

Solving
-8 + 4x = 4

Solving for variable 'x'.

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

Add '8' to each side of the equation.
-8 + 8 + 4x = 4 + 8

Combine like terms: -8 + 8 = 0
0 + 4x = 4 + 8
4x = 4 + 8

Combine like terms: 4 + 8 = 12
4x = 12

Divide each side by '4'.
x = 3

Simplifying
x = 3

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