12.09-3z+17.39=-19.87-7.7z

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Solution for 12.09-3z+17.39=-19.87-7.7z equation: 


Simplifying
12.09 + -3z + 17.39 = -19.87 + -7.7z

Reorder the terms:
12.09 + 17.39 + -3z = -19.87 + -7.7z

Combine like terms: 12.09 + 17.39 = 29.48
29.48 + -3z = -19.87 + -7.7z

Solving
29.48 + -3z = -19.87 + -7.7z

Solving for variable 'z'.

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

Add '7.7z' to each side of the equation.
29.48 + -3z + 7.7z = -19.87 + -7.7z + 7.7z

Combine like terms: -3z + 7.7z = 4.7z
29.48 + 4.7z = -19.87 + -7.7z + 7.7z

Combine like terms: -7.7z + 7.7z = 0.0
29.48 + 4.7z = -19.87 + 0.0
29.48 + 4.7z = -19.87

Add '-29.48' to each side of the equation.
29.48 + -29.48 + 4.7z = -19.87 + -29.48

Combine like terms: 29.48 + -29.48 = 0.00
0.00 + 4.7z = -19.87 + -29.48
4.7z = -19.87 + -29.48

Combine like terms: -19.87 + -29.48 = -49.35
4.7z = -49.35

Divide each side by '4.7'.
z = -10.5

Simplifying
z = -10.5

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