2(y+1.3)=7.8

Solution for 2(y+1.3)=7.8 equation:

Simplifying
2(y + 1.3) = 7.8

Reorder the terms:
2(1.3 + y) = 7.8
(1.3 * 2 + y * 2) = 7.8
(2.6 + 2y) = 7.8

Solving
2.6 + 2y = 7.8

Solving for variable 'y'.

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

Add '-2.6' to each side of the equation.
2.6 + -2.6 + 2y = 7.8 + -2.6

Combine like terms: 2.6 + -2.6 = 0.0
0.0 + 2y = 7.8 + -2.6
2y = 7.8 + -2.6

Combine like terms: 7.8 + -2.6 = 5.2
2y = 5.2

Divide each side by '2'.
y = 2.6

Simplifying
y = 2.6