7+2z-4=7z+12-4z

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Solution for 7+2z-4=7z+12-4z equation:


Simplifying
7 + 2z + -4 = 7z + 12 + -4z

Reorder the terms:
7 + -4 + 2z = 7z + 12 + -4z

Combine like terms: 7 + -4 = 3
3 + 2z = 7z + 12 + -4z

Reorder the terms:
3 + 2z = 12 + 7z + -4z

Combine like terms: 7z + -4z = 3z
3 + 2z = 12 + 3z

Solving
3 + 2z = 12 + 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.
3 + 2z + -3z = 12 + 3z + -3z

Combine like terms: 2z + -3z = -1z
3 + -1z = 12 + 3z + -3z

Combine like terms: 3z + -3z = 0
3 + -1z = 12 + 0
3 + -1z = 12

Add '-3' to each side of the equation.
3 + -3 + -1z = 12 + -3

Combine like terms: 3 + -3 = 0
0 + -1z = 12 + -3
-1z = 12 + -3

Combine like terms: 12 + -3 = 9
-1z = 9

Divide each side by '-1'.
z = -9

Simplifying
z = -9

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