3x+21=5x-35

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Solution for 3x+21=5x-35 equation:


Simplifying
3x + 21 = 5x + -35

Reorder the terms:
21 + 3x = 5x + -35

Reorder the terms:
21 + 3x = -35 + 5x

Solving
21 + 3x = -35 + 5x

Solving for variable 'x'.

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

Add '-5x' to each side of the equation.
21 + 3x + -5x = -35 + 5x + -5x

Combine like terms: 3x + -5x = -2x
21 + -2x = -35 + 5x + -5x

Combine like terms: 5x + -5x = 0
21 + -2x = -35 + 0
21 + -2x = -35

Add '-21' to each side of the equation.
21 + -21 + -2x = -35 + -21

Combine like terms: 21 + -21 = 0
0 + -2x = -35 + -21
-2x = -35 + -21

Combine like terms: -35 + -21 = -56
-2x = -56

Divide each side by '-2'.
x = 28

Simplifying
x = 28

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