7z-20=-15+2z

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Solution for 7z-20=-15+2z equation:


Simplifying
7z + -20 = -15 + 2z

Reorder the terms:
-20 + 7z = -15 + 2z

Solving
-20 + 7z = -15 + 2z

Solving for variable 'z'.

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

Add '-2z' to each side of the equation.
-20 + 7z + -2z = -15 + 2z + -2z

Combine like terms: 7z + -2z = 5z
-20 + 5z = -15 + 2z + -2z

Combine like terms: 2z + -2z = 0
-20 + 5z = -15 + 0
-20 + 5z = -15

Add '20' to each side of the equation.
-20 + 20 + 5z = -15 + 20

Combine like terms: -20 + 20 = 0
0 + 5z = -15 + 20
5z = -15 + 20

Combine like terms: -15 + 20 = 5
5z = 5

Divide each side by '5'.
z = 1

Simplifying
z = 1

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