3+4z+9=31

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Solution for 3+4z+9=31 equation:


Simplifying
3 + 4z + 9 = 31

Reorder the terms:
3 + 9 + 4z = 31

Combine like terms: 3 + 9 = 12
12 + 4z = 31

Solving
12 + 4z = 31

Solving for variable 'z'.

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

Add '-12' to each side of the equation.
12 + -12 + 4z = 31 + -12

Combine like terms: 12 + -12 = 0
0 + 4z = 31 + -12
4z = 31 + -12

Combine like terms: 31 + -12 = 19
4z = 19

Divide each side by '4'.
z = 4.75

Simplifying
z = 4.75

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