Question

जर X+2y=5 आणि 2x+y=7असल्यास X+Y ची कीमत काढा​

Answer 1

Answer:

x+2y=3

2x+y=7=5

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Answer 2

Y=1. x=3.

:x+y= 3+1.

Step-by-step explanation:

let,

x+2y=5_______eqn1.

2x+y=7________equation2.

adding 1and2

x+2y=5

+ 2x+y=7

3x+3y=12______eqñ 4.

(x+y=4)

subtracting 1 from2

x+2y=5

-2x+y=7

-x+y=-2______eqñ5.

(-x+y=-2)

x+y=4

-x+y=-2____adding

=2y=2

y=1

put y=1 in equation 4

x+y=4

x+(1)=4

x=4-1

x=3.