Question

1/x + 1/y=7and 2/x+3/y=17 slove by cross multiplication method​

Answer 1

Step-by-step explanation:

1x+1y=7→(1)

2x+3y=17→(2)

Perform: ⇒(2)−2×(1), we get

⇒1y=17−14=3

⇒y=13

Substituting this value in equation (1), we get ⇒1x=4

⇒x=14

Therefore, the values are ⇒x=14,y=13

or

Assume 1x=a;1y=b, then we have

a+b=7→(1)

2a+3b=17→(2)

Perform: ⇒(2)−2×(1), we get b=3

From equation (1), we get a=4

Therefore, ⇒y=1b=13 & x=1a=14

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Answer 2

Step-by-step explanation:

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