4y-40=2y-20

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Solution for 4y-40=2y-20 equation: 


Simplifying
4y + -40 = 2y + -20

Reorder the terms:
-40 + 4y = 2y + -20

Reorder the terms:
-40 + 4y = -20 + 2y

Solving
-40 + 4y = -20 + 2y

Solving for variable 'y'.

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

Add '-2y' to each side of the equation.
-40 + 4y + -2y = -20 + 2y + -2y

Combine like terms: 4y + -2y = 2y
-40 + 2y = -20 + 2y + -2y

Combine like terms: 2y + -2y = 0
-40 + 2y = -20 + 0
-40 + 2y = -20

Add '40' to each side of the equation.
-40 + 40 + 2y = -20 + 40

Combine like terms: -40 + 40 = 0
0 + 2y = -20 + 40
2y = -20 + 40

Combine like terms: -20 + 40 = 20
2y = 20

Divide each side by '2'.
y = 10

Simplifying
y = 10

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