2z+9.75-7z=-5.15

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Solution for 2z+9.75-7z=-5.15 equation: 


Simplifying
2z + 9.75 + -7z = -5.15

Reorder the terms:
9.75 + 2z + -7z = -5.15

Combine like terms: 2z + -7z = -5z
9.75 + -5z = -5.15

Solving
9.75 + -5z = -5.15

Solving for variable 'z'.

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

Add '-9.75' to each side of the equation.
9.75 + -9.75 + -5z = -5.15 + -9.75

Combine like terms: 9.75 + -9.75 = 0.00
0.00 + -5z = -5.15 + -9.75
-5z = -5.15 + -9.75

Combine like terms: -5.15 + -9.75 = -14.9
-5z = -14.9

Divide each side by '-5'.
z = 2.98

Simplifying
z = 2.98

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