Question

PLZ AJUTOR DAU COROANA ILSI 100 PUNCTE

Answer 1

4a x+70=-100, x=-170

4b y+8=2000, y=2008

4c z+29=-718, z=-747

5a 3x=81, x=81:3= 27

5b -11y=121, y= -11

5c -35z=-210, z=6

6a x:(-8)=-20, x=(-8)(-20)=160

6b y:38=10, y=380

6c z:(-19)=-18, z=342

7a 3x+72=0, 3x=-72, x=-24

7b -8y+800=0, -8y=-800, y=100

7c 22z+440=0, 22z=-440, z=-20