30=10-z

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Solution for 30=10-z equation:


Simplifying
30 = 10 + -1z

Solving
30 = 10 + -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.
30 + z = 10 + -1z + z

Combine like terms: -1z + z = 0
30 + z = 10 + 0
30 + z = 10

Add '-30' to each side of the equation.
30 + -30 + z = 10 + -30

Combine like terms: 30 + -30 = 0
0 + z = 10 + -30
z = 10 + -30

Combine like terms: 10 + -30 = -20
z = -20

Simplifying
z = -20

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