0.78(y+2)=3.9

Solution for 0.78(y+2)=3.9 equation:

Simplifying
0.78(y + 2) = 3.9

Reorder the terms:
0.78(2 + y) = 3.9
(2 * 0.78 + y * 0.78) = 3.9
(1.56 + 0.78y) = 3.9

Solving
1.56 + 0.78y = 3.9

Solving for variable 'y'.

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

Add '-1.56' to each side of the equation.
1.56 + -1.56 + 0.78y = 3.9 + -1.56

Combine like terms: 1.56 + -1.56 = 0.00
0.00 + 0.78y = 3.9 + -1.56
0.78y = 3.9 + -1.56

Combine like terms: 3.9 + -1.56 = 2.34
0.78y = 2.34

Divide each side by '0.78'.
y = 3

Simplifying
y = 3