Question

me ajudem a responde y=8x 2x+y=5

Answer 1

y = 8x
2x +y = 5

2x +8x = 5
10x = 5
x = 5/10 ou 0,5

y = 8 . 0,5
y = 4

Answer 2

y=8x <=> " <=> "<=>"<=>"<=> y = 8(1/2) <=>y= 8/2 <=>y=4
2x+y=5 <=> 2x+ 8x=5<=> 10x=5 <=> x=5/10 <=> x= 1/2<=> x =0,5