sabrinabrandao96 30/04/2021 a) (x, 3) = (-2, y) x= -2 3= y b) (x+1, 3) = (2, y-1) x+1= 2 x= 1 3= y-1 y= 4 c) (3, 5x-3y) = (2x+y, 2) 2x+y= 3 (I) (* 3) 5x-3y= 2 (II) 6x+ 3y= 9 + 5x -3y= 2 11x+ 0 = 11 x=1 2x+y= 3 (I) 2*1 +Y= 3 Y= 1Explicação passo-a-passo:
sabrinabrandao96
a) (x, 3) = (-2, y)
x= -2
3= y
b) (x+1, 3) = (2, y-1)
x+1= 2
x= 1
3= y-1
y= 4
c) (3, 5x-3y) = (2x+y, 2)
2x+y= 3 (I) (* 3)
5x-3y= 2 (II)
6x+ 3y= 9
+
5x -3y= 2
11x+ 0 = 11
x=1
2x+y= 3 (I)
2*1 +Y= 3
Y= 1
Explicação passo-a-passo: