Question

А)-5y + х = 2,5y = 3х – 3;​

Answer 1

-3x+3+x=2
-2x=-1
x=1/2
x=0,5

5y=3*05-3
5y=1,5-3
5y=-1,5
y=- 1,5/5
y=- 3/10
y=-0,3

Answer 2

It seems there might be a typographical error in the equation you've provided. It should be:

-5y + x = 2.5y = 3x - 3

However, the equal sign (=) appears twice, which is not a standard form for equations. Equations typically have one equal sign to separate the left-hand side (LHS) from the right-hand side (RHS).

If you meant to write two separate equations, it should look something like this:

1. -5y + x = 2.5
2. 3x - 3 = 2.5y

Now you can work with these two equations. Please clarify if this is not what you intended or if you need help solving these equations.