Question

Expressões Aritméticas
1) 15-(5-2+6)-1=
2) 8-3:(2+1)+2.4=
3) (6.8):24+5-2.(3.2)=
4) 3+2.(18:6+4)-10=
5) 2+[(5.2):2-(4.0.2)]=

Answer 1

$a) \\ 15-(5-2+6)-1=15-(3+6)-1=15-9-1=15-10=5 \\ \\ b) \\ 8- \frac{3}{(2+1)} +2.4=8- \frac{3}{3} +8=8-1+816-1=15 \\ \\ c) \\ \frac{6.8}{24} +5-2.(3.2)= \frac{48}{24} +5-2.6=2+5-12=7-12=-5 \\ \\ d) \\ 3+2.( \frac{18}{6} +4)-10=3+2.(3+4)-10=3+2.7-10= \\ \\ =3+14-10=17-10=7 \\ \\ e) \\ 2+[ \frac{5.2}{2} -(4.0.2)]=2+[5-0]=2+5=7$