Question

calcule as seguintes expressões

Answer 1

a)6+4•{-72:[(-2-2)•3+3]}

6+4•{-72:[-4•3+3]}

6+4•{-72:(-12)+3}

6+4•{6+3}

6+4•9

6+36=42

b)-7-[8+(-6-9):3+2]•2+1

-7-[8-15:3+2]•2+1

-7-[8-5+2]•2+1

-7-5•2+1

-7-10+1=-16

c)-15-{-1-2•[8+24:(-1-3)]}

-15-{-1-2•[8-6]}

-15-(-1-4)=-20

d)21-{2•[12+6:(4-2•3)]}

21-{2•[12+6-2]}

21-(2•16)

21-32=-11