3x-7=77-4x

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Solution for 3x-7=77-4x equation:


Simplifying
3x + -7 = 77 + -4x

Reorder the terms:
-7 + 3x = 77 + -4x

Solving
-7 + 3x = 77 + -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.
-7 + 3x + 4x = 77 + -4x + 4x

Combine like terms: 3x + 4x = 7x
-7 + 7x = 77 + -4x + 4x

Combine like terms: -4x + 4x = 0
-7 + 7x = 77 + 0
-7 + 7x = 77

Add '7' to each side of the equation.
-7 + 7 + 7x = 77 + 7

Combine like terms: -7 + 7 = 0
0 + 7x = 77 + 7
7x = 77 + 7

Combine like terms: 77 + 7 = 84
7x = 84

Divide each side by '7'.
x = 12

Simplifying
x = 12

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