Question

If x:y=3:4 find 3x +4y:3x+5y

Answer 1

Answer:

25:29

Step-by-step explanation:

x:y=3:4

3x+4y:3x+5y

=3x+4y

=3×3+4×4=25

=3x+5y

=3×3+5×4=29

3x+4y:3xx+5y

=25:29

Answer 2

Answer:

Step-by-step explanation:x*5/2+2/3=-7/12,

5x/2+2/3=-7/2,

denominators L.C.M=6

5x/2*6+2/3*6 total /6,

15x+4= -7/2,

30x+8=-7,

30x=-15,

x=-15/30,

x=-1/2.

hence the rational number should be =-1/2