90+90+z+z=360

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Solution for 90+90+z+z=360 equation:


Simplifying
90 + 90 + z + z = 360

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

Combine like terms: z + z = 2z
180 + 2z = 360

Solving
180 + 2z = 360

Solving for variable 'z'.

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

Add '-180' to each side of the equation.
180 + -180 + 2z = 360 + -180

Combine like terms: 180 + -180 = 0
0 + 2z = 360 + -180
2z = 360 + -180

Combine like terms: 360 + -180 = 180
2z = 180

Divide each side by '2'.
z = 90

Simplifying
z = 90

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