1)2×-3,14+×=×+12
2x-x-x=12+3,14
0·x=15,14
x∈∅
2)4×-2,15+3×=×+7,85
4x+3x-x=7,85+2,15
6x=10
x=10/8
x=1,25
asa le rezolvi si 3,4,5,6,7
pe x il treci in stanga iar cifrele in dreapta dupa egal cu semn schimbat
8)ו3,2=1,28
x=1,28:3,2
x=128/100:32/10
x=128/100·10/32 simplificam
x=0,4
la fel si pe 9
10)ו10 supra 2=3,12
x=3,12:10/2
x=312/100:10/2
x=312/100·2/10 simplif
x=0,624
la fel 11
12)×:0,001=0,00001
x=0,00001·0,001
x=0,00000001
13)×+2,345=3
x=3,000-2,345
x=0,655
14)7,654-×=2,2
x=7,654-2,2
x=5,454
15)×-33,3=5,7
x=5,7+33,3
x=39
16)ו10,7=5,6
x=5,6:10,7
x=56/10:107/10
x=56/10·10/107
x=56/107