Solve the system of equations 5x-2y=18 and 3x+3y=15

first one: y = 2.5x - 9

second one: y = - x + 5

Step-by-step explanation:

First you have to get y by its self, you have to move it to one side of the equals sign. So it is now:

-2y = - 5x + 18

Now you can divide it all by - 2,

y = 2.5x - 9

18 turned into a negative 9 because it was divided by a negative.

Then repeat the same thing for the second one:

3y = - 3x + 15

y = - x + 5