10(x+7)=9(x+9)

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Solution for 10(x+7)=9(x+9) equation:


Simplifying
10(x + 7) = 9(x + 9)

Reorder the terms:
10(7 + x) = 9(x + 9)
(7 * 10 + x * 10) = 9(x + 9)
(70 + 10x) = 9(x + 9)

Reorder the terms:
70 + 10x = 9(9 + x)
70 + 10x = (9 * 9 + x * 9)
70 + 10x = (81 + 9x)

Solving
70 + 10x = 81 + 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.
70 + 10x + -9x = 81 + 9x + -9x

Combine like terms: 10x + -9x = 1x
70 + 1x = 81 + 9x + -9x

Combine like terms: 9x + -9x = 0
70 + 1x = 81 + 0
70 + 1x = 81

Add '-70' to each side of the equation.
70 + -70 + 1x = 81 + -70

Combine like terms: 70 + -70 = 0
0 + 1x = 81 + -70
1x = 81 + -70

Combine like terms: 81 + -70 = 11
1x = 11

Divide each side by '1'.
x = 11

Simplifying
x = 11

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