Question

K)-[-2-7-1]
L)-[-3-8-(5+4)]
M)(10-2)-3+(8+7-5)

Answer 1

Explicação passo-a-passo:

K)-[-2-7-1]

-[-2-8]

-[-10]

10

L)-[-3-8-(5+4)]

-[-3-8-(9)]

-[-3-8-9]

-[-3-17]

-[-20]

20

M)(10-2)-3+(8+7-5)

(8)-3+(8+2)

8 -3+(10)

5 + 10

15