Question

1 50x+ 30y=230 and 30x+ 50y= 170 ihen x-y=​

Answer 1

Answer:

50x+30y=230

30x+50y=170

80x+80y=400

80 (x+y)=400

x+y=400/80

x+y=50

and

50x+30y=230

-30x-50y=-170

20x-20y=60

20 (x-y)=60

so,x-y=60/20

answer= x-y= 3

I hope it will be helpful

to you please mark me

as a brainliest

Answer 2

Answer:

3

Step-by-step explanation:

let 50x+ 30y=230 equation 1

and 30x+ 50y= 170 equation 2

substracting equation 2 from equation 1

Therefore,

50x+ 30y-(30x+ 50y) = 230-170

50x+ 30y- 30x - 50y = 60

20x-20y=60

20(x - y) =60

x - y = 60/20

x - y = 3