CBSE Class 10 Answered
Q. Solve x+y=3 and 2x+5y=10 using elimination method.
Asked by karanbora625 | 13 Apr, 2020, 07:51: PM
Expert Answer
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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