Question

preciso da resposta com muita urgencia i) y=x+18 x+y=22 j)x=-y+3 x-y=7 k)y=x+15 x+y=31 l)x=y+12 x+y=48

Answer 1

Explicação passo-a-passo:

i) y=x+18x+y=22

{y=22

{x+18x+y=22

x+18x+22=22

x=0

(x.y)=(0,22)

22=0+18x0+22=22

22=22=22

(x,y)=(0,22)

j) x=-y+3x-y=7

{x=7

{y+3xy=7

y+3x7y=7

y=$\frac{7}{22}$

(x,y)=(7,$\frac{7}{22}$)

7= $\frac{7}{22}$+3.7.$\frac{7}{22}$=7

7=7=7

(x,y)=(7,$\frac{7}{22}$)

k) y=x+15x+y=31

{7=31

{x+15x+y=31

x+15x+y=31

x=0

(x,y)=(0,31)

31=0+15.0+31=31

31=31=31

(x,y)=(0,31)

l) x=y+12x+y48

x-12x+8

-11x+8