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Toate exercitile din poza!! Va rog mult , e urgent!!!!! Dau coroana!!!

Toate Exercitile Din Poza Va Rog Mult E Urgent Dau Coroana class=

Răspuns :

ex1!
3/7,4/5,23/41,7/2
ex2.!
15/8-5/8=10/2simpli cu2=5/4
ex3!
31×(x-2)=17×67
31x-62=1139
31x=1139+62
31x=1201
x=1201÷31
x=38r23
ex4!
a )5/27+1/27=6/27
b)5/27+5+1/27+1/27=5+6+1/27=12/27
27/27-12/27=15/27