4z+9=8z+18

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Solution for 4z+9=8z+18 equation:


Simplifying
4z + 9 = 8z + 18

Reorder the terms:
9 + 4z = 8z + 18

Reorder the terms:
9 + 4z = 18 + 8z

Solving
9 + 4z = 18 + 8z

Solving for variable 'z'.

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

Add '-8z' to each side of the equation.
9 + 4z + -8z = 18 + 8z + -8z

Combine like terms: 4z + -8z = -4z
9 + -4z = 18 + 8z + -8z

Combine like terms: 8z + -8z = 0
9 + -4z = 18 + 0
9 + -4z = 18

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

Combine like terms: 9 + -9 = 0
0 + -4z = 18 + -9
-4z = 18 + -9

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

Divide each side by '-4'.
z = -2.25

Simplifying
z = -2.25

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