4x+21=2x+77

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Solution for 4x+21=2x+77 equation:


Simplifying
4x + 21 = 2x + 77

Reorder the terms:
21 + 4x = 2x + 77

Reorder the terms:
21 + 4x = 77 + 2x

Solving
21 + 4x = 77 + 2x

Solving for variable 'x'.

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

Add '-2x' to each side of the equation.
21 + 4x + -2x = 77 + 2x + -2x

Combine like terms: 4x + -2x = 2x
21 + 2x = 77 + 2x + -2x

Combine like terms: 2x + -2x = 0
21 + 2x = 77 + 0
21 + 2x = 77

Add '-21' to each side of the equation.
21 + -21 + 2x = 77 + -21

Combine like terms: 21 + -21 = 0
0 + 2x = 77 + -21
2x = 77 + -21

Combine like terms: 77 + -21 = 56
2x = 56

Divide each side by '2'.
x = 28

Simplifying
x = 28

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