(4y-42)=2y

Solution for (4y-42)=2y equation:

Simplifying
(4y + -42) = 2y

Reorder the terms:
(-42 + 4y) = 2y

Remove parenthesis around (-42 + 4y)
-42 + 4y = 2y

Solving
-42 + 4y = 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.
-42 + 4y + -2y = 2y + -2y

Combine like terms: 4y + -2y = 2y
-42 + 2y = 2y + -2y

Combine like terms: 2y + -2y = 0
-42 + 2y = 0

Add '42' to each side of the equation.
-42 + 42 + 2y = 0 + 42

Combine like terms: -42 + 42 = 0
0 + 2y = 0 + 42
2y = 0 + 42

Combine like terms: 0 + 42 = 42
2y = 42

Divide each side by '2'.
y = 21

Simplifying
y = 21