4.2+7z=4

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Solution for 4.2+7z=4 equation: 


Simplifying
4.2 + 7z = 4

Solving
4.2 + 7z = 4

Solving for variable 'z'.

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

Add '-4.2' to each side of the equation.
4.2 + -4.2 + 7z = 4 + -4.2

Combine like terms: 4.2 + -4.2 = 0.0
0.0 + 7z = 4 + -4.2
7z = 4 + -4.2

Combine like terms: 4 + -4.2 = -0.2
7z = -0.2

Divide each side by '7'.
z = -0.02857142857

Simplifying
z = -0.02857142857

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