Question

b)
1x + 4y = 8
3x + 13y = 16

Answer 1

Resposta:

1x +4y=8

1×=8

×=8/1

×=8

4y=8

y=8/4

y=2

3×+13y=16

×=16/3

×=5,3

y=16/13

y= 1.2