Question

Calcule o valor das expressões.

a) (12+2.5)-8

b) 25-(15+6÷3)

c) 25+[7+(8-4÷2)]

d) 60-[8+(10-2)÷2)]

e) 80-[22+(5.2-1)+6]

f) 14÷2+[13-(4.2+1)]

Answer 1

a)(12+2·5)-8=(12+10)-8=22-8=14√
b)25-(16+6÷3)=25-(16+2)=25-18=7√
c)25+[7+(8-4÷2)]=25+[7+(8-2)]=25+[7+6]=25+13=38√
d)60-[8+(10-2)÷2]=60-[8+8÷2]=60-[8+4]=60-4=56√
e)80-[22+(5.2-1)+6]=80-[22+(10-1)+6]=80-[22+9+6]=80-37=43√
f)14÷2+[13-(4.2+1)]=14÷2+[13-(8+1)]=14÷2+[13-7]=14÷2+6=7+6=13√

espero ter ajudado =)