Question 6087
once you found a, you put it back into the equation to find b:

3(-3)+2b=8
-9+2b=8
2b=17
b=17/2

then verify with both numbers in the other equation:
5(-3)+2(17/2)=2
-15+17=2 - this is a true statement, so the solution is  = (-3,17/2) - this is written in parentheses because the solution is actually where these two lines intersect on a graph - a single point.