Rewrite these with the x's and y's on the same side of the equations
10x + 15y = 17 ...(1)
15x - 25y = -3 ...(2)
Multiply all terms in (1) by 3 and all terms in (2) by 2
30x + 45y = 51 ...(3)
30x - 50y = -6 ...(4)
Subtract (4) from (3) term by term
45y - (-50y) = 51 - (-6)
or 95y = 57
y = 57/95 or y = 3/5
Substitute this into (1)
10x +15*3/5 =17
10x + 9 = 17
10x = 8
x = 8/10 or x = 4/5
Rewrite these with the x's and y's on the same side of the equations
10x + 15y = 17 ...(1)
15x - 25y = -3 ...(2)
Multiply all terms in (1) by 3 and all terms in (2) by 2
30x + 45y = 51 ...(3)
30x - 50y = -6 ...(4)
Subtract (4) from (3) term by term
45y - (-50y) = 51 - (-6)
or 95y = 57
y = 57/95 or y = 3/5
Substitute this into (1)
10x +15*3/5 =17
10x + 9 = 17
10x = 8
x = 8/10 or x = 4/5