3x-91=42-4x

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Solution for 3x-91=42-4x equation:


Simplifying
3x + -91 = 42 + -4x

Reorder the terms:
-91 + 3x = 42 + -4x

Solving
-91 + 3x = 42 + -4x

Solving for variable 'x'.

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

Add '4x' to each side of the equation.
-91 + 3x + 4x = 42 + -4x + 4x

Combine like terms: 3x + 4x = 7x
-91 + 7x = 42 + -4x + 4x

Combine like terms: -4x + 4x = 0
-91 + 7x = 42 + 0
-91 + 7x = 42

Add '91' to each side of the equation.
-91 + 91 + 7x = 42 + 91

Combine like terms: -91 + 91 = 0
0 + 7x = 42 + 91
7x = 42 + 91

Combine like terms: 42 + 91 = 133
7x = 133

Divide each side by '7'.
x = 19

Simplifying
x = 19

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