21(x+8)-12(9+2x)=10(2x+4)

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Solution for 21(x+8)-12(9+2x)=10(2x+4) equation:


Simplifying
21(x + 8) + -12(9 + 2x) = 10(2x + 4)

Reorder the terms:
21(8 + x) + -12(9 + 2x) = 10(2x + 4)
(8 * 21 + x * 21) + -12(9 + 2x) = 10(2x + 4)
(168 + 21x) + -12(9 + 2x) = 10(2x + 4)
168 + 21x + (9 * -12 + 2x * -12) = 10(2x + 4)
168 + 21x + (-108 + -24x) = 10(2x + 4)

Reorder the terms:
168 + -108 + 21x + -24x = 10(2x + 4)

Combine like terms: 168 + -108 = 60
60 + 21x + -24x = 10(2x + 4)

Combine like terms: 21x + -24x = -3x
60 + -3x = 10(2x + 4)

Reorder the terms:
60 + -3x = 10(4 + 2x)
60 + -3x = (4 * 10 + 2x * 10)
60 + -3x = (40 + 20x)

Solving
60 + -3x = 40 + 20x

Solving for variable 'x'.

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

Add '-20x' to each side of the equation.
60 + -3x + -20x = 40 + 20x + -20x

Combine like terms: -3x + -20x = -23x
60 + -23x = 40 + 20x + -20x

Combine like terms: 20x + -20x = 0
60 + -23x = 40 + 0
60 + -23x = 40

Add '-60' to each side of the equation.
60 + -60 + -23x = 40 + -60

Combine like terms: 60 + -60 = 0
0 + -23x = 40 + -60
-23x = 40 + -60

Combine like terms: 40 + -60 = -20
-23x = -20

Divide each side by '-23'.
x = 0.8695652174

Simplifying
x = 0.8695652174

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