7+3z-9=10

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Solution for 7+3z-9=10 equation: 


Simplifying
7 + 3z + -9 = 10

Reorder the terms:
7 + -9 + 3z = 10

Combine like terms: 7 + -9 = -2
-2 + 3z = 10

Solving
-2 + 3z = 10

Solving for variable 'z'.

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

Add '2' to each side of the equation.
-2 + 2 + 3z = 10 + 2

Combine like terms: -2 + 2 = 0
0 + 3z = 10 + 2
3z = 10 + 2

Combine like terms: 10 + 2 = 12
3z = 12

Divide each side by '3'.
z = 4

Simplifying
z = 4

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