20=8y-(4y)

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Solution for 20=8y-(4y) equation:


Simplifying
20 = 8y + -1(4y)

Remove parenthesis around (4y)
20 = 8y + -1 * 4y

Multiply -1 * 4
20 = 8y + -4y

Combine like terms: 8y + -4y = 4y
20 = 4y

Solving
20 = 4y

Solving for variable 'y'.

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

Add '-4y' to each side of the equation.
20 + -4y = 4y + -4y

Combine like terms: 4y + -4y = 0
20 + -4y = 0

Add '-20' to each side of the equation.
20 + -20 + -4y = 0 + -20

Combine like terms: 20 + -20 = 0
0 + -4y = 0 + -20
-4y = 0 + -20

Combine like terms: 0 + -20 = -20
-4y = -20

Divide each side by '-4'.
y = 5

Simplifying
y = 5

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