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Q. Solve x+y=3 and 2x+5y=10 using elimination method.
Asked by karanbora625 | 13 Apr, 2020, 07:51: PM
x + y = 3 ..... (i)
2x + 5y = 10 ..... (ii)

Try to eliminate any of the variables 'x' or 'y'

Let us try to eliminate 'x'

We multiply the first equation by '2' and get
2x + 2y = 6 ..... (iii)

We now equate this with eqn (ii)

2x + 5y=10 ..... (ii)
2x + 2y = 6 ..... (iii)

What should we do here to eliminate 'x'
Lets do (ii) - (iii), we get
3y = 4
y = 4/3

Substitute the value of 'y' in any of the eqn to get 'x'
Try and let us know.

Answered by | 13 Apr, 2020, 08:23: PM

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