Question

calcule mentalmente A)50:(7-12) B)(20-14):(-2) C)(35-15):4 D)(7-3-10):(5-6)​

Answer 1

Resposta:

A)

$50 \div (7 - 12) \\ 50 \div ( - 5) \\ - 10$

B)

$(20 - 14) \div ( - 2) \\ 20 + 7 \\ 27$

C)

$(35 - 15) \div 4 \\ 20 \div 4 \\ 5$

D)

$(7 - 3 - 10) \div (5 - 6) \\ 7 - 3 - 10 \div ( - 1) \\ 7 - 3 + 10 \\ 14$

Answer 2

a)50:-5= b)+6:(-2)= c)20:4= d)-20:-1=

10 +4 +5 -21