Question

10x{24-[20-(5×a-3)]:2}​

Answer 1

10·{24 - [20- (5a-3)]:2}=150 (mutam 10 cu impartire)

24-[20-(5a-3)]:2=15 (mutam 2 cu inmultire)

24-[20-(5a-3)]=30 (scadem 24)

-20-(5a-3)=6 (adunam 20, avem grija la semn)

-(5a-3)=26 ( minusul schimba semnele din paranteza)

-5a+3=26 (scadem 3)

-5a=23 (impartim (-5) )

a=$- \frac{23}{5}$