4=-7+z-8z

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Solution for 4=-7+z-8z equation:


Simplifying
4 = -7 + z + -8z

Combine like terms: z + -8z = -7z
4 = -7 + -7z

Solving
4 = -7 + -7z

Solving for variable 'z'.

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

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

Combine like terms: -7z + 7z = 0
4 + 7z = -7 + 0
4 + 7z = -7

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

Combine like terms: 4 + -4 = 0
0 + 7z = -7 + -4
7z = -7 + -4

Combine like terms: -7 + -4 = -11
7z = -11

Divide each side by '7'.
z = -1.571428571

Simplifying
z = -1.571428571

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