z-(-3.5)=3.9

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Solution for z-(-3.5)=3.9 equation: 


Simplifying
z + -1(-3.5) = 3.9

Multiply -1 * -3.5
z + 3.5 = 3.9

Reorder the terms:
3.5 + z = 3.9

Solving
3.5 + z = 3.9

Solving for variable 'z'.

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

Add '-3.5' to each side of the equation.
3.5 + -3.5 + z = 3.9 + -3.5

Combine like terms: 3.5 + -3.5 = 0.0
0.0 + z = 3.9 + -3.5
z = 3.9 + -3.5

Combine like terms: 3.9 + -3.5 = 0.4
z = 0.4

Simplifying
z = 0.4

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