Question

3x+4y=3900
2x+5y=4000

Answer 1

Answer:

this is right because answer of your question

X ki value ab aap find it sakte ho.

Answer 2

Answer:

X=500,Y=600

Step-by-step explanation:

by elimination method

3x+4y=3900×2

2x+5y=4000×3

6x+8y=7800 that is EQ. 1

6 x+15y=12000 and that is EQ. 2

EQ.2 substracted by EQ.1

-7y = -4200

y=4200/7

y=600

put the value of y in 2x+5y=4000

2x+5×600=4000

x=500