4z+18-5z=2z+21

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Solution for 4z+18-5z=2z+21 equation:


Simplifying
4z + 18 + -5z = 2z + 21

Reorder the terms:
18 + 4z + -5z = 2z + 21

Combine like terms: 4z + -5z = -1z
18 + -1z = 2z + 21

Reorder the terms:
18 + -1z = 21 + 2z

Solving
18 + -1z = 21 + 2z

Solving for variable 'z'.

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

Add '-2z' to each side of the equation.
18 + -1z + -2z = 21 + 2z + -2z

Combine like terms: -1z + -2z = -3z
18 + -3z = 21 + 2z + -2z

Combine like terms: 2z + -2z = 0
18 + -3z = 21 + 0
18 + -3z = 21

Add '-18' to each side of the equation.
18 + -18 + -3z = 21 + -18

Combine like terms: 18 + -18 = 0
0 + -3z = 21 + -18
-3z = 21 + -18

Combine like terms: 21 + -18 = 3
-3z = 3

Divide each side by '-3'.
z = -1

Simplifying
z = -1

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