42y-55=y-77

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Solution for 42y-55=y-77 equation:


Simplifying
42y + -55 = y + -77

Reorder the terms:
-55 + 42y = y + -77

Reorder the terms:
-55 + 42y = -77 + y

Solving
-55 + 42y = -77 + y

Solving for variable 'y'.

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

Add '-1y' to each side of the equation.
-55 + 42y + -1y = -77 + y + -1y

Combine like terms: 42y + -1y = 41y
-55 + 41y = -77 + y + -1y

Combine like terms: y + -1y = 0
-55 + 41y = -77 + 0
-55 + 41y = -77

Add '55' to each side of the equation.
-55 + 55 + 41y = -77 + 55

Combine like terms: -55 + 55 = 0
0 + 41y = -77 + 55
41y = -77 + 55

Combine like terms: -77 + 55 = -22
41y = -22

Divide each side by '41'.
y = -0.5365853659

Simplifying
y = -0.5365853659

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