4(2x+12)=5x+21

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Solution for 4(2x+12)=5x+21 equation:


Simplifying
4(2x + 12) = 5x + 21

Reorder the terms:
4(12 + 2x) = 5x + 21
(12 * 4 + 2x * 4) = 5x + 21
(48 + 8x) = 5x + 21

Reorder the terms:
48 + 8x = 21 + 5x

Solving
48 + 8x = 21 + 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.
48 + 8x + -5x = 21 + 5x + -5x

Combine like terms: 8x + -5x = 3x
48 + 3x = 21 + 5x + -5x

Combine like terms: 5x + -5x = 0
48 + 3x = 21 + 0
48 + 3x = 21

Add '-48' to each side of the equation.
48 + -48 + 3x = 21 + -48

Combine like terms: 48 + -48 = 0
0 + 3x = 21 + -48
3x = 21 + -48

Combine like terms: 21 + -48 = -27
3x = -27

Divide each side by '3'.
x = -9

Simplifying
x = -9

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