2x+5(2x+4)=9x+21

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Solution for 2x+5(2x+4)=9x+21 equation:


Simplifying
2x + 5(2x + 4) = 9x + 21

Reorder the terms:
2x + 5(4 + 2x) = 9x + 21
2x + (4 * 5 + 2x * 5) = 9x + 21
2x + (20 + 10x) = 9x + 21

Reorder the terms:
20 + 2x + 10x = 9x + 21

Combine like terms: 2x + 10x = 12x
20 + 12x = 9x + 21

Reorder the terms:
20 + 12x = 21 + 9x

Solving
20 + 12x = 21 + 9x

Solving for variable 'x'.

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

Add '-9x' to each side of the equation.
20 + 12x + -9x = 21 + 9x + -9x

Combine like terms: 12x + -9x = 3x
20 + 3x = 21 + 9x + -9x

Combine like terms: 9x + -9x = 0
20 + 3x = 21 + 0
20 + 3x = 21

Add '-20' to each side of the equation.
20 + -20 + 3x = 21 + -20

Combine like terms: 20 + -20 = 0
0 + 3x = 21 + -20
3x = 21 + -20

Combine like terms: 21 + -20 = 1
3x = 1

Divide each side by '3'.
x = 0.3333333333

Simplifying
x = 0.3333333333

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