3z-20=7z+10

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Solution for 3z-20=7z+10 equation:


Simplifying
3z + -20 = 7z + 10

Reorder the terms:
-20 + 3z = 7z + 10

Reorder the terms:
-20 + 3z = 10 + 7z

Solving
-20 + 3z = 10 + 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.
-20 + 3z + -7z = 10 + 7z + -7z

Combine like terms: 3z + -7z = -4z
-20 + -4z = 10 + 7z + -7z

Combine like terms: 7z + -7z = 0
-20 + -4z = 10 + 0
-20 + -4z = 10

Add '20' to each side of the equation.
-20 + 20 + -4z = 10 + 20

Combine like terms: -20 + 20 = 0
0 + -4z = 10 + 20
-4z = 10 + 20

Combine like terms: 10 + 20 = 30
-4z = 30

Divide each side by '-4'.
z = -7.5

Simplifying
z = -7.5

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