Question

0.5x + 0.2y = 5
0.6x + 0.4y = 8.4

Answer 1

Step-by-step explanation:

here come your answer........

Answer 2

Step-by-step explanation:

x = 5 - 0.2y /0.5

0.6(5 - 0.2y/0.5) + 0.4y = 8.4

3 - 0.12y / 0.5 + 0.4y = 8.4

3 - 0.12y + 0.4y = 0.5(8.4)

3 - 0.28y = 4.2

-0.28y = 4.2 - 3

0.28y = -1.2

y = -1.2/0.28

y = - 4.2

so,

x = 5 - 0.2(-4.2) / 0.5

= 5 + 0.84 / 0.5

= 5.84 / 0.5

= 11.68