Question

1 . Rezolvati ecuatia:
125-3 inmultit (2x-1)=98
2. Rezolvati ecuatia:
7 inmultit {2+6 inmultit [20-3 inmultit (11 inmultit 3-27)]}+x=2109
ajutati-ma va rog !!!!

Answer 1

125-3(2X-1)=98
125-6x+3=98
6x=125+3-98
6x=30
x=30:6=5

7{2+6[20-3(11.3-27)]}+x=2109
7{2+6[20-3(33-27)]}+x=2109
7[2+6(20-3.6)]+x=2109
7[2+6(20-18)]+x=2109
7(2+6.2)+x=2109
7(2+12)+x=2109
7.14+x=2109
98+x=2109
x=2109-98
x=2011