5z-(z-18)=6-(z+15)

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Solution for 5z-(z-18)=6-(z+15) equation:


Simplifying
5z + -1(z + -18) = 6 + -1(z + 15)

Reorder the terms:
5z + -1(-18 + z) = 6 + -1(z + 15)
5z + (-18 * -1 + z * -1) = 6 + -1(z + 15)
5z + (18 + -1z) = 6 + -1(z + 15)

Reorder the terms:
18 + 5z + -1z = 6 + -1(z + 15)

Combine like terms: 5z + -1z = 4z
18 + 4z = 6 + -1(z + 15)

Reorder the terms:
18 + 4z = 6 + -1(15 + z)
18 + 4z = 6 + (15 * -1 + z * -1)
18 + 4z = 6 + (-15 + -1z)

Combine like terms: 6 + -15 = -9
18 + 4z = -9 + -1z

Solving
18 + 4z = -9 + -1z

Solving for variable 'z'.

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

Add 'z' to each side of the equation.
18 + 4z + z = -9 + -1z + z

Combine like terms: 4z + z = 5z
18 + 5z = -9 + -1z + z

Combine like terms: -1z + z = 0
18 + 5z = -9 + 0
18 + 5z = -9

Add '-18' to each side of the equation.
18 + -18 + 5z = -9 + -18

Combine like terms: 18 + -18 = 0
0 + 5z = -9 + -18
5z = -9 + -18

Combine like terms: -9 + -18 = -27
5z = -27

Divide each side by '5'.
z = -5.4

Simplifying
z = -5.4

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