10z-30=7z+30

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Solution for 10z-30=7z+30 equation:


Simplifying
10z + -30 = 7z + 30

Reorder the terms:
-30 + 10z = 7z + 30

Reorder the terms:
-30 + 10z = 30 + 7z

Solving
-30 + 10z = 30 + 7z

Solving for variable 'z'.

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

Add '-7z' to each side of the equation.
-30 + 10z + -7z = 30 + 7z + -7z

Combine like terms: 10z + -7z = 3z
-30 + 3z = 30 + 7z + -7z

Combine like terms: 7z + -7z = 0
-30 + 3z = 30 + 0
-30 + 3z = 30

Add '30' to each side of the equation.
-30 + 30 + 3z = 30 + 30

Combine like terms: -30 + 30 = 0
0 + 3z = 30 + 30
3z = 30 + 30

Combine like terms: 30 + 30 = 60
3z = 60

Divide each side by '3'.
z = 20

Simplifying
z = 20

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