7z+7-3z=28-3z

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Solution for 7z+7-3z=28-3z equation:


Simplifying
7z + 7 + -3z = 28 + -3z

Reorder the terms:
7 + 7z + -3z = 28 + -3z

Combine like terms: 7z + -3z = 4z
7 + 4z = 28 + -3z

Solving
7 + 4z = 28 + -3z

Solving for variable 'z'.

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

Add '3z' to each side of the equation.
7 + 4z + 3z = 28 + -3z + 3z

Combine like terms: 4z + 3z = 7z
7 + 7z = 28 + -3z + 3z

Combine like terms: -3z + 3z = 0
7 + 7z = 28 + 0
7 + 7z = 28

Add '-7' to each side of the equation.
7 + -7 + 7z = 28 + -7

Combine like terms: 7 + -7 = 0
0 + 7z = 28 + -7
7z = 28 + -7

Combine like terms: 28 + -7 = 21
7z = 21

Divide each side by '7'.
z = 3

Simplifying
z = 3

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