4x+21=3x-69

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Solution for 4x+21=3x-69 equation:


Simplifying
4x + 21 = 3x + -69

Reorder the terms:
21 + 4x = 3x + -69

Reorder the terms:
21 + 4x = -69 + 3x

Solving
21 + 4x = -69 + 3x

Solving for variable 'x'.

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

Add '-3x' to each side of the equation.
21 + 4x + -3x = -69 + 3x + -3x

Combine like terms: 4x + -3x = 1x
21 + 1x = -69 + 3x + -3x

Combine like terms: 3x + -3x = 0
21 + 1x = -69 + 0
21 + 1x = -69

Add '-21' to each side of the equation.
21 + -21 + 1x = -69 + -21

Combine like terms: 21 + -21 = 0
0 + 1x = -69 + -21
1x = -69 + -21

Combine like terms: -69 + -21 = -90
1x = -90

Divide each side by '1'.
x = -90

Simplifying
x = -90

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