Question

aflati x din egalitatile
x+1/2=5/2
3/5+x=4/5
2/3+5/6=x
x-3/11=5/11
11/4-x=3/2
5/7=15/7-x
3/13-2/39=x
2 1/3+x=3 1/9
x-3 2/5 = 22/3
7 1/4 - x =3 1/5
7/9+x/9=13/9
x=3 4/5- 2 1/3

unde vedeti ca dupa o cifra e putin loc si apoi o fracti inseamna intregi si fr

Answer 1

ti le-am pus in poza ca sa poti vedea amplificarile

Answer 2

x+1/2=5/2
x=5/2-1/2=4/2=2

3/5+x=4/5    x=4/5-3/5=1/5

2/3+5/6=x   numitorul 6  4+5=6x      9=6x   x=9/6=3/2

x-3/11=5/11   x=5/11+3/11=8/11

11/4-x=3/2    x=11/4-3/2   =5/4

5/7=15/7-x   x=15/7-5/7=10/7

3/13-2/39=x   7/39=x
7/3+x=28/9   x=28/9-7/3 =7/3

x-17/5=22/3  x=17/5+22/3=51+110totul pe 15=161/110

29/4-x=16/5   x=29/4-16/5=145-64totul pe 20 =81/20

7/9+x/9=13/9  x/9=13/9-7/9=6/9   x=6

x=19/5-7/3 =57-35totul pe 15=22/15