3x+7-42=4x

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Solution for 3x+7-42=4x equation:


Simplifying
3x + 7 + -42 = 4x

Reorder the terms:
7 + -42 + 3x = 4x

Combine like terms: 7 + -42 = -35
-35 + 3x = 4x

Solving
-35 + 3x = 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.
-35 + 3x + -4x = 4x + -4x

Combine like terms: 3x + -4x = -1x
-35 + -1x = 4x + -4x

Combine like terms: 4x + -4x = 0
-35 + -1x = 0

Add '35' to each side of the equation.
-35 + 35 + -1x = 0 + 35

Combine like terms: -35 + 35 = 0
0 + -1x = 0 + 35
-1x = 0 + 35

Combine like terms: 0 + 35 = 35
-1x = 35

Divide each side by '-1'.
x = -35

Simplifying
x = -35

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