Question

Rezolvati ecuatia in multimea numerelor rationale:(DAU COROANA!!)
_______________________________________________________
a)x-2,4=8
b)x+3,6=0,5
c)-x+8,2=6
d)5-x=-11,7
e)-$\frac{3}{4}$x=3,12
f)2,5x-7,2=1,8
g)2$\frac{1}{3}$x+0,08=1,2
h)-5$\frac{3}{5}$x+0,48=-53
VA ROG FRUMOS!!!!

Answer 1

a)
x=8+2,4=>x=10,4
b)
x=0,5-3,6=>x=-3,1
c)
-x=6-8,2=>-x=-2,2=>x=2,2
d)
x=-11,7+5=>x=-6,7
e)
x=312/100*4/3=>x=-104/25
f)
2,5x=1,8+7,2=>2,5x=9=>x=9/2,5=>x=3,6
g)
7/3x+8/100=12/10=>7/3x=(12/10)*10-8/100=>7/3x=120-8/100=>7/3x=112/100=>x=112/100:7/3=>x=112/100*3/7=>x=3,36/7
h)
-28/5x+0,48=-5,3=>-28/5x=-5,3-0,48=>-28/5x=-5,78=>x=-578/100:(-28/5)=>x=289/280