Question

solve the following pair of linear equations by the elimination method . 0.2x+0.3y=1.3 , 0.4x+0.5y=2.3 ​

Answer 1

Answer:

x+ y = 0.5 , x+ y = 4.5

Step-by-step explanation:

0.2x + 0.3y =1.3 , 0.4x + 0.5y =2.3

0.2x + y =1.3 - 0.3 0.4x + y =2.3 - 0.5

x + y = 1.0 / 0.2 x + y = 1.8 / 0.4

x + y = 0.5 x + y = 4.5

I am not sure if I am right mark as brainliest......

Answer 2

Answer:

x=2 and y=3

Step-by-step explanation:

0.2x+0.3y=1.3 and 0.4x+0.5y=2.3

dividing both equations by 10,

2/10x+3/10y=13/10 and 4/10x+5/10y=23/10

multiplying both equations by 10,

2x+3y=13 (1) and 4x+5y=23 (2)

multiplying equation (1) by 2,

4x+6y=26 (3)

subtracting equation (2) from (3),

4x+6y=26

- 4x+5y=23

____________

y = 3

____________

y=3.

substituting y=3 in equation (1)

2x+ 3x3=13

2x+ 9= 13

2x=13-9

2x= 4

x=4/2

x= 2 .