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

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


Simplifying
(9x + -10) + -10(x + -9) = x + 9 + -1(x + -7)

Reorder the terms:
(-10 + 9x) + -10(x + -9) = x + 9 + -1(x + -7)

Remove parenthesis around (-10 + 9x)
-10 + 9x + -10(x + -9) = x + 9 + -1(x + -7)

Reorder the terms:
-10 + 9x + -10(-9 + x) = x + 9 + -1(x + -7)
-10 + 9x + (-9 * -10 + x * -10) = x + 9 + -1(x + -7)
-10 + 9x + (90 + -10x) = x + 9 + -1(x + -7)

Reorder the terms:
-10 + 90 + 9x + -10x = x + 9 + -1(x + -7)

Combine like terms: -10 + 90 = 80
80 + 9x + -10x = x + 9 + -1(x + -7)

Combine like terms: 9x + -10x = -1x
80 + -1x = x + 9 + -1(x + -7)

Reorder the terms:
80 + -1x = x + 9 + -1(-7 + x)
80 + -1x = x + 9 + (-7 * -1 + x * -1)
80 + -1x = x + 9 + (7 + -1x)

Reorder the terms:
80 + -1x = 9 + 7 + x + -1x

Combine like terms: 9 + 7 = 16
80 + -1x = 16 + x + -1x

Combine like terms: x + -1x = 0
80 + -1x = 16 + 0
80 + -1x = 16

Solving
80 + -1x = 16

Solving for variable 'x'.

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

Add '-80' to each side of the equation.
80 + -80 + -1x = 16 + -80

Combine like terms: 80 + -80 = 0
0 + -1x = 16 + -80
-1x = 16 + -80

Combine like terms: 16 + -80 = -64
-1x = -64

Divide each side by '-1'.
x = 64

Simplifying
x = 64

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