70+100+80+90+z=85

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Solution for 70+100+80+90+z=85 equation: 


Simplifying
70 + 100 + 80 + 90 + z = 85

Combine like terms: 70 + 100 = 170
170 + 80 + 90 + z = 85

Combine like terms: 170 + 80 = 250
250 + 90 + z = 85

Combine like terms: 250 + 90 = 340
340 + z = 85

Solving
340 + z = 85

Solving for variable 'z'.

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

Add '-340' to each side of the equation.
340 + -340 + z = 85 + -340

Combine like terms: 340 + -340 = 0
0 + z = 85 + -340
z = 85 + -340

Combine like terms: 85 + -340 = -255
z = -255

Simplifying
z = -255

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