42-3y=4y

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Solution for 42-3y=4y equation:


Simplifying
42 + -3y = 4y

Solving
42 + -3y = 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.
42 + -3y + -4y = 4y + -4y

Combine like terms: -3y + -4y = -7y
42 + -7y = 4y + -4y

Combine like terms: 4y + -4y = 0
42 + -7y = 0

Add '-42' to each side of the equation.
42 + -42 + -7y = 0 + -42

Combine like terms: 42 + -42 = 0
0 + -7y = 0 + -42
-7y = 0 + -42

Combine like terms: 0 + -42 = -42
-7y = -42

Divide each side by '-7'.
y = 6

Simplifying
y = 6

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