Question

Solve it if you know ​

Answer 1

Answer:

_____________

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Answer 2

Step-by-step explanation:

0.2x + 0.3y = 1.3 (equation A)

0.4x + 0.5y = 2.3 (equation B )

2x + 3y = 13

10 10 10

2x + 3y = 13

10 10

2x + 3y = 13 * 10

10

so , 2x + 3y = 13

3y = 13 - 2x

y = 13 -2x ……………(1)

3

equation B

0.4x + 0.5y = 2.3

4x + 5x = 23

10 10 10

4x + 5y = 23

10 10

4x + 5y = 23 * 10

10

4x + 5y = 23

now substitute y in it .

4x + 5( 13 - 2x ) = 23

3

4x + 65 + 10x = 23

3

12x + 65 + 10x = 23

3

2x + 65 = 23 *3

2x = 69 - 65

2x = 4

x = 2 .

now substitute x in equation A .

equation A

2x + 3y = 13

2* 2 + 3y = 13

4 + 3y = 13

3y = 13 -4

3y = 9

y = 3 .

now we got x = 2 and y = 3 .

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