90+90+90+90+90+90+z=180

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Solution for 90+90+90+90+90+90+z=180 equation: 


Simplifying
90 + 90 + 90 + 90 + 90 + 90 + z = 180

Combine like terms: 90 + 90 = 180
180 + 90 + 90 + 90 + 90 + z = 180

Combine like terms: 180 + 90 = 270
270 + 90 + 90 + 90 + z = 180

Combine like terms: 270 + 90 = 360
360 + 90 + 90 + z = 180

Combine like terms: 360 + 90 = 450
450 + 90 + z = 180

Combine like terms: 450 + 90 = 540
540 + z = 180

Solving
540 + z = 180

Solving for variable 'z'.

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

Add '-540' to each side of the equation.
540 + -540 + z = 180 + -540

Combine like terms: 540 + -540 = 0
0 + z = 180 + -540
z = 180 + -540

Combine like terms: 180 + -540 = -360
z = -360

Simplifying
z = -360

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