Question

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Answer 1

Answer:

7/9

Step-by-step explanation:

Simple guess and check. 7+1=8, 9+1=10, hence 8/10=4/5

7-5=2, 9-5=4, 2/4=1/2

Answer 2

Answer:

7/9

Step-by-step explanation:

x+1/y+1=4/5

5(X+1)=4(y+1) (cross multiplication)

5x+5=4y+4

5x+5-4=4y

5x+1=4y __________(1)

x-5/y-5=1/2

2(x-5)=y-5. (cross multiplication)

2x-10=y-5

2x=y-5+10

2x=y+5

2x-5=y_____________(2)

using (2) in (1)

5x+1=4y

5x+1=4(2x-5)

5x+1=8x-20

1+20=8x-5x

21=3x

21/3=X

7=X

X=7

using 2

2x-5=y

2*7-5=y

14-5=y

9=y

y=9

since, X=7 and y=9

the fraction is X/y or 7/9

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