1. d) 0,3x-1=0,2 e)-3supra2x+0,2=1supra6 f)0,5-2supra3x=1uypra6 2. a)x / 2=1supra3 b) x / 2supra 3=3supra5 d)2x / 4supra5=10supra3 e) x/0,4=0,5 f) 3x/0,25=0,2

1
iti multumesc din suflet :*
cu placere :))

Răspunsuri

Cel mai inteligent răspuns!
2014-10-24T17:30:28+03:00
1. d) 0,3 x= 0,2+1=1,2⇒ 3x=12⇒x=4
e) 3/2*x = 2/10 - 1/6 = 1/5-1/6=6/30-5/30=1/30⇒ x=1/30:3/2=1/30*2/3=2/90
f) 5/10 -1/6=2/3*x⇒ 1/2-1/6=2/3*x⇒ 3/6-1/6 =2/3*x  ⇒2/6=2/3*x  ⇒x=2/6:2/3=2/6*3/2=1/2=0,5
a) x/2=1/3 ⇒ x=2/3
b) x/ 2/3=3/5 ⇒ x=3/5*2/3= 2/5
d) 2x/ 4/5=10/3⇒ 2x=10/3*4/5=40/15⇒ x=40/30=4/3
e) x/0,4=0,5⇒ x=0,5*0,4=5/10*4/10=20/10=2
f) 3x/0,25=0,2 ⇒ 3x=0,25*0,2=5
iti multumesc din suflet
si 2 il stiii?
care 2?
scrie in continuare 2.
Daca ai inteles cum se rezolva, incearca singura...nu vad nici un 2..