4x+28=3x+21

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Solution for 4x+28=3x+21 equation:


Simplifying
4x + 28 = 3x + 21

Reorder the terms:
28 + 4x = 3x + 21

Reorder the terms:
28 + 4x = 21 + 3x

Solving
28 + 4x = 21 + 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.
28 + 4x + -3x = 21 + 3x + -3x

Combine like terms: 4x + -3x = 1x
28 + 1x = 21 + 3x + -3x

Combine like terms: 3x + -3x = 0
28 + 1x = 21 + 0
28 + 1x = 21

Add '-28' to each side of the equation.
28 + -28 + 1x = 21 + -28

Combine like terms: 28 + -28 = 0
0 + 1x = 21 + -28
1x = 21 + -28

Combine like terms: 21 + -28 = -7
1x = -7

Divide each side by '1'.
x = -7

Simplifying
x = -7

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