3z+5=7z+9

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Solution for 3z+5=7z+9 equation:


Simplifying
3z + 5 = 7z + 9

Reorder the terms:
5 + 3z = 7z + 9

Reorder the terms:
5 + 3z = 9 + 7z

Solving
5 + 3z = 9 + 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.
5 + 3z + -7z = 9 + 7z + -7z

Combine like terms: 3z + -7z = -4z
5 + -4z = 9 + 7z + -7z

Combine like terms: 7z + -7z = 0
5 + -4z = 9 + 0
5 + -4z = 9

Add '-5' to each side of the equation.
5 + -5 + -4z = 9 + -5

Combine like terms: 5 + -5 = 0
0 + -4z = 9 + -5
-4z = 9 + -5

Combine like terms: 9 + -5 = 4
-4z = 4

Divide each side by '-4'.
z = -1

Simplifying
z = -1

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