Question

3. Calcule as expressões numéricas:
a) 120: (-5+8) -6 . {40-7 . [16+(-72+23)] +64}
b) -91+{-[4. (-6) + (-4+6) + 2]:2}​

Answer 1

Resposta:

a) 120:3-6{40-7[16+(-49)]+64}

40-6{40-7[16-49]+64}

40-6{40-7.[-33]+64}

40-6{40+231+64}

40-6.335

40-2010= -1970

b)-91+{-[-24+2+2]:2}

-91+{-[-20]:2}

-91+{20:2}

-91+10= -81