Question

P.S. " * " = ori ( X )
Rezolvati ecuatiile :

11*X=891
3*X+2=845
2*X+5=81
6*X+3=21
4*(X+3)+1=25
4*X+11=15
3*X-4=11
7-3*X=1 !
5*X-50=225 !

Ultimele 2 sunt optionale
Va rog , ajutati-ma :(

Answer 1

11*X=891
X=891:11
X=81

3*X+2=845
3*X=845-2
3*X=843
X=843:3
X=281

2*X+5=81
2*X=81-5
2*X=76
X=76:2
X=38

6*X+3=21
6*X=21-3
6*X=18
X=18:6
X=3

4*(X+3)+1=25
4*(X+3)=25-1
4*(X+3)=24
X+3=24:4
X+3=6
X=6-3
X=3

4*X+11=15
4*X=15-11
4*X=4
X=4:4
X=1

3*X-4=11
3*X=11+4
3*X=15
X=15:3
X=5

7-3*X=1
3*X=7-1
3*X=6
X=6:3
X=2
SPER CA TE -AM AJUTAT!