7(x-9)+9=7x-9(9-x)

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


Simplifying
7(x + -9) + 9 = 7x + -9(9 + -1x)

Reorder the terms:
7(-9 + x) + 9 = 7x + -9(9 + -1x)
(-9 * 7 + x * 7) + 9 = 7x + -9(9 + -1x)
(-63 + 7x) + 9 = 7x + -9(9 + -1x)

Reorder the terms:
-63 + 9 + 7x = 7x + -9(9 + -1x)

Combine like terms: -63 + 9 = -54
-54 + 7x = 7x + -9(9 + -1x)
-54 + 7x = 7x + (9 * -9 + -1x * -9)
-54 + 7x = 7x + (-81 + 9x)

Reorder the terms:
-54 + 7x = -81 + 7x + 9x

Combine like terms: 7x + 9x = 16x
-54 + 7x = -81 + 16x

Solving
-54 + 7x = -81 + 16x

Solving for variable 'x'.

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

Add '-16x' to each side of the equation.
-54 + 7x + -16x = -81 + 16x + -16x

Combine like terms: 7x + -16x = -9x
-54 + -9x = -81 + 16x + -16x

Combine like terms: 16x + -16x = 0
-54 + -9x = -81 + 0
-54 + -9x = -81

Add '54' to each side of the equation.
-54 + 54 + -9x = -81 + 54

Combine like terms: -54 + 54 = 0
0 + -9x = -81 + 54
-9x = -81 + 54

Combine like terms: -81 + 54 = -27
-9x = -27

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

Simplifying
x = 3

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