Răspuns:
Explicație pas cu pas:
a) -0,5x=-7,5 x=7,5:0,5=15
b)-5y/2=1/4 y=-1/4×2/5=-1/10=-0,1
c)1,4z=-7/2 z=-7/2×10/14=-5/2=-2,5
d)6/5u=0,8 u=8/10×5/6=2/3
e)9,9:x=-3 x=9,9:(-3)=-3,3
f)x:(-6/7)=13/6 x=-6/7×13/6=-13/7
g)-1,6x=0,8 -16x=8 x=-1/2=-0,5
h)y:5/2=34/10 y=34/10×5/2=17/2=8,5
