Question

Rezolvare problema: [(x-1):100+90]:10-10=0

Answer 1

Intai adaugi 10 si apoi imultesti cu zece =100
Apoi scazi 90=10
Apoi imultesti cu 100 =1000
=> x-1=1000
      x=1001

Answer 2

[(x-1):100+90]:10=0+10=10
[(x-1):100+90]=10x10=100
(x-1):100=100-90=10
(x-1)=10x100
x-1=1000
x=1000+1
x=1001