Răspuns :
[5*(5*x-5)-120]*5-25=125
[5*(5*x-5)-120]*5=125+25
[5*(5*x-5)-120]*5=150
[5*(5*x-5)-120]=150:5
[5*(5*x-5)-120]=30
5*(5*x-5)=30+120
5*(5*x-5)=150
5*x-5=150:5
5*x-5=30
5*x=30+5
5*x=35
x=35:5
x=7
Sper că te-am ajutat!
[5*(5*x-5)-120]*5=125+25
[5*(5*x-5)-120]*5=150
[5*(5*x-5)-120]=150:5
[5*(5*x-5)-120]=30
5*(5*x-5)=30+120
5*(5*x-5)=150
5*x-5=150:5
5*x-5=30
5*x=30+5
5*x=35
x=35:5
x=7
Sper că te-am ajutat!
[5·(5·x-5)-120]·5-25=125
(25x-25-120)x5=150
25x-25-120=150:5=30
25x=175
x=7
PROBA
[5*(5*7-5)-120]*5-25=
(5*30-120)*5-25=
150-25=125
SUCCES
(25x-25-120)x5=150
25x-25-120=150:5=30
25x=175
x=7
PROBA
[5*(5*7-5)-120]*5-25=
(5*30-120)*5-25=
150-25=125
SUCCES