20+(5y-8)=42

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Solution for 20+(5y-8)=42 equation:


Simplifying
20 + (5y + -8) = 42

Reorder the terms:
20 + (-8 + 5y) = 42

Remove parenthesis around (-8 + 5y)
20 + -8 + 5y = 42

Combine like terms: 20 + -8 = 12
12 + 5y = 42

Solving
12 + 5y = 42

Solving for variable 'y'.

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

Add '-12' to each side of the equation.
12 + -12 + 5y = 42 + -12

Combine like terms: 12 + -12 = 0
0 + 5y = 42 + -12
5y = 42 + -12

Combine like terms: 42 + -12 = 30
5y = 30

Divide each side by '5'.
y = 6

Simplifying
y = 6

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