3(5-z)=2z-20

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Solution for 3(5-z)=2z-20 equation:


Simplifying
3(5 + -1z) = 2z + -20
(5 * 3 + -1z * 3) = 2z + -20
(15 + -3z) = 2z + -20

Reorder the terms:
15 + -3z = -20 + 2z

Solving
15 + -3z = -20 + 2z

Solving for variable 'z'.

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

Add '-2z' to each side of the equation.
15 + -3z + -2z = -20 + 2z + -2z

Combine like terms: -3z + -2z = -5z
15 + -5z = -20 + 2z + -2z

Combine like terms: 2z + -2z = 0
15 + -5z = -20 + 0
15 + -5z = -20

Add '-15' to each side of the equation.
15 + -15 + -5z = -20 + -15

Combine like terms: 15 + -15 = 0
0 + -5z = -20 + -15
-5z = -20 + -15

Combine like terms: -20 + -15 = -35
-5z = -35

Divide each side by '-5'.
z = 7

Simplifying
z = 7

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