9z-4(z+5)=40

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Solution for 9z-4(z+5)=40 equation:


Simplifying
9z + -4(z + 5) = 40

Reorder the terms:
9z + -4(5 + z) = 40
9z + (5 * -4 + z * -4) = 40
9z + (-20 + -4z) = 40

Reorder the terms:
-20 + 9z + -4z = 40

Combine like terms: 9z + -4z = 5z
-20 + 5z = 40

Solving
-20 + 5z = 40

Solving for variable 'z'.

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

Add '20' to each side of the equation.
-20 + 20 + 5z = 40 + 20

Combine like terms: -20 + 20 = 0
0 + 5z = 40 + 20
5z = 40 + 20

Combine like terms: 40 + 20 = 60
5z = 60

Divide each side by '5'.
z = 12

Simplifying
z = 12

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