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

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


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

Reorder the terms:
4(-4 + 3z) + 9(5z + 4) = 0
(-4 * 4 + 3z * 4) + 9(5z + 4) = 0
(-16 + 12z) + 9(5z + 4) = 0

Reorder the terms:
-16 + 12z + 9(4 + 5z) = 0
-16 + 12z + (4 * 9 + 5z * 9) = 0
-16 + 12z + (36 + 45z) = 0

Reorder the terms:
-16 + 36 + 12z + 45z = 0

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

Combine like terms: 12z + 45z = 57z
20 + 57z = 0

Solving
20 + 57z = 0

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 + 57z = 0 + -20

Combine like terms: 20 + -20 = 0
0 + 57z = 0 + -20
57z = 0 + -20

Combine like terms: 0 + -20 = -20
57z = -20

Divide each side by '57'.
z = -0.350877193

Simplifying
z = -0.350877193

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