90+78+90+x=180

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Solution for 90+78+90+x=180 equation:


Simplifying
90 + 78 + 90 + x = 180

Combine like terms: 90 + 78 = 168
168 + 90 + x = 180

Combine like terms: 168 + 90 = 258
258 + x = 180

Solving
258 + x = 180

Solving for variable 'x'.

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

Add '-258' to each side of the equation.
258 + -258 + x = 180 + -258

Combine like terms: 258 + -258 = 0
0 + x = 180 + -258
x = 180 + -258

Combine like terms: 180 + -258 = -78
x = -78

Simplifying
x = -78

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