3.5y-2.5y-6.3=-1.0-2.5

Solution for 3.5y-2.5y-6.3=-1.0-2.5 equation:

Simplifying
3.5y + -2.5y + -6.3 = -1.0 + -2.5

Reorder the terms:
-6.3 + 3.5y + -2.5y = -1.0 + -2.5

Combine like terms: 3.5y + -2.5y = 1y
-6.3 + 1y = -1.0 + -2.5

Combine like terms: -1.0 + -2.5 = -3.5
-6.3 + 1y = -3.5

Solving
-6.3 + 1y = -3.5

Solving for variable 'y'.

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

Add '6.3' to each side of the equation.
-6.3 + 6.3 + 1y = -3.5 + 6.3

Combine like terms: -6.3 + 6.3 = 0.0
0.0 + 1y = -3.5 + 6.3
1y = -3.5 + 6.3

Combine like terms: -3.5 + 6.3 = 2.8
1y = 2.8

Divide each side by '1'.
y = 2.8

Simplifying
y = 2.8