santosmanuele19 14/07/2022 5y-12 =3y+20 5y-3y=20+12 2y= 8 y=8/2 y=4 b) 3z+2= 2z+13 3z-2z= +13-2 1z= 11 z= 11/1 z= 11
santosmanuele19
5y-12 =3y+20
5y-3y=20+12
2y= 8
y=8/2
y=4
b) 3z+2= 2z+13
3z-2z= +13-2
1z= 11
z= 11/1
z= 11