Question

get a medal
What is the solution set of the following system of equations?

5x - 3y - 10 = 0
x + y - 7 = 0



{(31/8, 25/8)}

{(25/8, 31/8)}

{(45/2, 31/2)}

{(31/2, 45/2)}

Answer 1

this first 1 i think

Answer 2

hhhhmmmmmmmm i need u to be sure

Answer 3

2) x + y - 7 = 0>>>>>>>x=-y+7 .........._(3)
substitute (3) in (1):
5(-y+7)-3y=10
-5y+35-3y=10
-8y=-25
y=25/8 >>>> (4)
substitute (4) in (3):
x=(-25/8)+7=31/8
so,the answer is :{(31/8, 25/8)