Math, asked by hazmanam3971, 11 months ago

Solve the following by using cross multiplication method x/5 + y/15 = 1/3 x/3 + y/5 = 1/5

Answers

Answered by amitnrw
4

Answer:

x =3

y = -4

Step-by-step explanation:

x/5 + y/15 = 1/3

x/3 + y/5 = 1/5

x/5 + y/15 = 1/3  

( multiplying both sides by 15)

=> 3x + y = 5    - eq 1

x/3 + y/5 = 1/5

( multiplying both sides by 15)

=> 5x + 3y = 3  - Eq 2

Eq 2 - Eq 1

2x + 2y = -2

=> x + y = -1

=> y = -1 - x

putting this value in Eq 2

3x -1 -x = 5

=> 2x = 6

=> x = 3

y = -1 - 3

y = -4

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