👤
Yuliar
a fost răspuns

Aflati X:
[5×(5X-5)-120]×5-25=150
Va rog!


Răspuns :

[5×(5X-5)-120]×5-25=150
[5×(5X-5)-120]×5=150+25
5×(5X-5)-120=175:5
5×(5X-5)-120=35
5×(5X-5)=35+120
5×(5X-5)=155
5X-5=155:5
5X-5=31
5x=31+5
5x=36
x=7,2