-7z-6-3z=31

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Solution for -7z-6-3z=31 equation:


Simplifying
-7z + -6 + -3z = 31

Reorder the terms:
-6 + -7z + -3z = 31

Combine like terms: -7z + -3z = -10z
-6 + -10z = 31

Solving
-6 + -10z = 31

Solving for variable 'z'.

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

Add '6' to each side of the equation.
-6 + 6 + -10z = 31 + 6

Combine like terms: -6 + 6 = 0
0 + -10z = 31 + 6
-10z = 31 + 6

Combine like terms: 31 + 6 = 37
-10z = 37

Divide each side by '-10'.
z = -3.7

Simplifying
z = -3.7

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