Question

CALCULATI:
5*[1,(2)-1,2]-1,9=?
PLS AJUTAȚI-MĂ!!!

Answer 1

[tex]5*[1,(2)-1,2]-1,9=? \\ \\ 5\left(\frac{12-1}{9}-1.2\right)-1.9 \\ \\ 5\left(\frac{12-1}{9}-1.2\right) \\ \\ \frac{12-1}{9} \\ \\ \frac{11}{9}=1.22222\dots \\ \\ =5\left(1.22222\dots -1.2\right) \\ \\ =5\cdot \:0.02222\dots \\ \\ =0.11111\dots \\ \\ =0.11111\dots -1.9 \\ \\ =-1.78889\dots [/tex]