Question

0.2x+0.3y=1.3,0.4x+0.5y=2.3​

Answer 1

Answer:

x=2,y=3

Step-by-step explanation:

2x/10+3y/10=13/10

2x+3y/10=13/10

2x+3y=13

x=13-3y/2.......mark it as 3

then we have to solve the second one

4x/10+5y/10=23/10

4x+5y/10=23/10

it can be written as

4x+5y=23.......mark it as 4

then put the value of x in 4th equation

4*13-3y/2+5y=23

26-6y+5y=23

26-y=23

-y=23-26

-y=-3

y=3 then put it in 3rd equation

x=13-3(3)/2

x=13-9/2

x=4/2

x=2