89+92+78+83+x+x=90-6

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Solution for 89+92+78+83+x+x=90-6 equation: 


Simplifying
89 + 92 + 78 + 83 + x + x = 90 + -6

Combine like terms: 89 + 92 = 181
181 + 78 + 83 + x + x = 90 + -6

Combine like terms: 181 + 78 = 259
259 + 83 + x + x = 90 + -6

Combine like terms: 259 + 83 = 342
342 + x + x = 90 + -6

Combine like terms: x + x = 2x
342 + 2x = 90 + -6

Combine like terms: 90 + -6 = 84
342 + 2x = 84

Solving
342 + 2x = 84

Solving for variable 'x'.

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

Add '-342' to each side of the equation.
342 + -342 + 2x = 84 + -342

Combine like terms: 342 + -342 = 0
0 + 2x = 84 + -342
2x = 84 + -342

Combine like terms: 84 + -342 = -258
2x = -258

Divide each side by '2'.
x = -129

Simplifying
x = -129

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