x-4+x=90

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Solution for x-4+x=90 equation: 


Simplifying
x + -4 + x = 90

Reorder the terms:
-4 + x + x = 90

Combine like terms: x + x = 2x
-4 + 2x = 90

Solving
-4 + 2x = 90

Solving for variable 'x'.

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

Add '4' to each side of the equation.
-4 + 4 + 2x = 90 + 4

Combine like terms: -4 + 4 = 0
0 + 2x = 90 + 4
2x = 90 + 4

Combine like terms: 90 + 4 = 94
2x = 94

Divide each side by '2'.
x = 47

Simplifying
x = 47

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