-20=5+3(z-7)

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Solution for -20=5+3(z-7) equation:


Simplifying
-20 = 5 + 3(z + -7)

Reorder the terms:
-20 = 5 + 3(-7 + z)
-20 = 5 + (-7 * 3 + z * 3)
-20 = 5 + (-21 + 3z)

Combine like terms: 5 + -21 = -16
-20 = -16 + 3z

Solving
-20 = -16 + 3z

Solving for variable 'z'.

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

Add '-3z' to each side of the equation.
-20 + -3z = -16 + 3z + -3z

Combine like terms: 3z + -3z = 0
-20 + -3z = -16 + 0
-20 + -3z = -16

Add '20' to each side of the equation.
-20 + 20 + -3z = -16 + 20

Combine like terms: -20 + 20 = 0
0 + -3z = -16 + 20
-3z = -16 + 20

Combine like terms: -16 + 20 = 4
-3z = 4

Divide each side by '-3'.
z = -1.333333333

Simplifying
z = -1.333333333

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