3z+7z=4z-7+8z

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Solution for 3z+7z=4z-7+8z equation:


Simplifying
3z + 7z = 4z + -7 + 8z

Combine like terms: 3z + 7z = 10z
10z = 4z + -7 + 8z

Reorder the terms:
10z = -7 + 4z + 8z

Combine like terms: 4z + 8z = 12z
10z = -7 + 12z

Solving
10z = -7 + 12z

Solving for variable 'z'.

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

Add '-12z' to each side of the equation.
10z + -12z = -7 + 12z + -12z

Combine like terms: 10z + -12z = -2z
-2z = -7 + 12z + -12z

Combine like terms: 12z + -12z = 0
-2z = -7 + 0
-2z = -7

Divide each side by '-2'.
z = 3.5

Simplifying
z = 3.5

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