4.2(y+18)=65.1

Solution for 4.2(y+18)=65.1 equation:

Simplifying
4.2(y + 18) = 65.1

Reorder the terms:
4.2(18 + y) = 65.1
(18 * 4.2 + y * 4.2) = 65.1
(75.6 + 4.2y) = 65.1

Solving
75.6 + 4.2y = 65.1

Solving for variable 'y'.

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

Add '-75.6' to each side of the equation.
75.6 + -75.6 + 4.2y = 65.1 + -75.6

Combine like terms: 75.6 + -75.6 = 0.0
0.0 + 4.2y = 65.1 + -75.6
4.2y = 65.1 + -75.6

Combine like terms: 65.1 + -75.6 = -10.5
4.2y = -10.5

Divide each side by '4.2'.
y = -2.5

Simplifying
y = -2.5