90=370-z

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Solution for 90=370-z equation:


Simplifying
90 = 370 + -1z

Solving
90 = 370 + -1z

Solving for variable 'z'.

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

Add 'z' to each side of the equation.
90 + z = 370 + -1z + z

Combine like terms: -1z + z = 0
90 + z = 370 + 0
90 + z = 370

Add '-90' to each side of the equation.
90 + -90 + z = 370 + -90

Combine like terms: 90 + -90 = 0
0 + z = 370 + -90
z = 370 + -90

Combine like terms: 370 + -90 = 280
z = 280

Simplifying
z = 280

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