30y-40=10y+40

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Solution for 30y-40=10y+40 equation:


Simplifying
30y + -40 = 10y + 40

Reorder the terms:
-40 + 30y = 10y + 40

Reorder the terms:
-40 + 30y = 40 + 10y

Solving
-40 + 30y = 40 + 10y

Solving for variable 'y'.

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

Add '-10y' to each side of the equation.
-40 + 30y + -10y = 40 + 10y + -10y

Combine like terms: 30y + -10y = 20y
-40 + 20y = 40 + 10y + -10y

Combine like terms: 10y + -10y = 0
-40 + 20y = 40 + 0
-40 + 20y = 40

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

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

Combine like terms: 40 + 40 = 80
20y = 80

Divide each side by '20'.
y = 4

Simplifying
y = 4

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