Question

1)Daca y=-6 , rezolvati in Z ecuatia -2x + 8=3y
2)Rezolvati in Z ecuatia -x + 4=4 stiind ca 2y+(-3) · (5-8)= (-5) totul la 2

Answer 1

1) -2x+8=-18
-2x =-18-8
-2x=-26
x=13
2)2y-3(-3)=25
2y+9=25
2y=25-9
2y=16
y=8