4(3z-5)+9(5z+4)=

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Solution for 4(3z-5)+9(5z+4)= equation:


Simplifying
4(3z + -5) + 9(5z + 4) = 0

Reorder the terms:
4(-5 + 3z) + 9(5z + 4) = 0
(-5 * 4 + 3z * 4) + 9(5z + 4) = 0
(-20 + 12z) + 9(5z + 4) = 0

Reorder the terms:
-20 + 12z + 9(4 + 5z) = 0
-20 + 12z + (4 * 9 + 5z * 9) = 0
-20 + 12z + (36 + 45z) = 0

Reorder the terms:
-20 + 36 + 12z + 45z = 0

Combine like terms: -20 + 36 = 16
16 + 12z + 45z = 0

Combine like terms: 12z + 45z = 57z
16 + 57z = 0

Solving
16 + 57z = 0

Solving for variable 'z'.

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

Add '-16' to each side of the equation.
16 + -16 + 57z = 0 + -16

Combine like terms: 16 + -16 = 0
0 + 57z = 0 + -16
57z = 0 + -16

Combine like terms: 0 + -16 = -16
57z = -16

Divide each side by '57'.
z = -0.2807017544

Simplifying
z = -0.2807017544

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