Math, asked by sakshidabral, 1 year ago

solve by cross multiplication
3x+2y=4
8x+5y=9

Answers

Answered by charu69

12

hey...
it may help you

Attachments:

sakshidabral: I got the concept but x=-2 and y=5 is given at the answer sheets

charu69: Ok I will check once

charu69: Sorry wait

charu69: now see it

charu69: Sorry for the mistake

sakshidabral: it's okay

charu69: now it's correct na

sakshidabral: yup

sakshidabral: thanks

Answered by ananya31838

1

Answer:

x = -2 and y = 5

Step-by-step explanation:

Given Equations are,

8x + 5y = 9

8x + 5y - 9 = 0 ....................(1)

3x + 2y = 4

3x + 2y - 4 = 0 .......................(2)

here,

since,

There exist unique solution,

By cross multiplication method we get,

First Consider,

Secondly consider,

Therefore, x = -2 and y = 5

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