8(z-(3z+21)+5)=4(z+8)

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Solution for 8(z-(3z+21)+5)=4(z+8) equation:


Simplifying
8(z + -1(3z + 21) + 5) = 4(z + 8)

Reorder the terms:
8(z + -1(21 + 3z) + 5) = 4(z + 8)
8(z + (21 * -1 + 3z * -1) + 5) = 4(z + 8)
8(z + (-21 + -3z) + 5) = 4(z + 8)

Reorder the terms:
8(-21 + 5 + z + -3z) = 4(z + 8)

Combine like terms: -21 + 5 = -16
8(-16 + z + -3z) = 4(z + 8)

Combine like terms: z + -3z = -2z
8(-16 + -2z) = 4(z + 8)
(-16 * 8 + -2z * 8) = 4(z + 8)
(-128 + -16z) = 4(z + 8)

Reorder the terms:
-128 + -16z = 4(8 + z)
-128 + -16z = (8 * 4 + z * 4)
-128 + -16z = (32 + 4z)

Solving
-128 + -16z = 32 + 4z

Solving for variable 'z'.

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

Add '-4z' to each side of the equation.
-128 + -16z + -4z = 32 + 4z + -4z

Combine like terms: -16z + -4z = -20z
-128 + -20z = 32 + 4z + -4z

Combine like terms: 4z + -4z = 0
-128 + -20z = 32 + 0
-128 + -20z = 32

Add '128' to each side of the equation.
-128 + 128 + -20z = 32 + 128

Combine like terms: -128 + 128 = 0
0 + -20z = 32 + 128
-20z = 32 + 128

Combine like terms: 32 + 128 = 160
-20z = 160

Divide each side by '-20'.
z = -8

Simplifying
z = -8

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