9(x+2)=8x+21

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Solution for 9(x+2)=8x+21 equation:


Simplifying
9(x + 2) = 8x + 21

Reorder the terms:
9(2 + x) = 8x + 21
(2 * 9 + x * 9) = 8x + 21
(18 + 9x) = 8x + 21

Reorder the terms:
18 + 9x = 21 + 8x

Solving
18 + 9x = 21 + 8x

Solving for variable 'x'.

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

Add '-8x' to each side of the equation.
18 + 9x + -8x = 21 + 8x + -8x

Combine like terms: 9x + -8x = 1x
18 + 1x = 21 + 8x + -8x

Combine like terms: 8x + -8x = 0
18 + 1x = 21 + 0
18 + 1x = 21

Add '-18' to each side of the equation.
18 + -18 + 1x = 21 + -18

Combine like terms: 18 + -18 = 0
0 + 1x = 21 + -18
1x = 21 + -18

Combine like terms: 21 + -18 = 3
1x = 3

Divide each side by '1'.
x = 3

Simplifying
x = 3

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