(81-x)+(34-7x)+(-2x)=205

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Solution for (81-x)+(34-7x)+(-2x)=205 equation: 


Simplifying
(81 + -1x) + (34 + -7x) + (-2x) = 205

Remove parenthesis around (81 + -1x)
81 + -1x + (34 + -7x) + (-2x) = 205

Remove parenthesis around (34 + -7x)
81 + -1x + 34 + -7x + (-2x) = 205

Reorder the terms:
81 + 34 + -1x + -7x + (-2x) = 205

Combine like terms: 81 + 34 = 115
115 + -1x + -7x + (-2x) = 205

Combine like terms: -1x + -7x = -8x
115 + -8x + (-2x) = 205

Combine like terms: -8x + (-2x) = -10x
115 + -10x = 205

Solving
115 + -10x = 205

Solving for variable 'x'.

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

Add '-115' to each side of the equation.
115 + -115 + -10x = 205 + -115

Combine like terms: 115 + -115 = 0
0 + -10x = 205 + -115
-10x = 205 + -115

Combine like terms: 205 + -115 = 90
-10x = 90

Divide each side by '-10'.
x = -9

Simplifying
x = -9

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