Question

-20-6•[-1)•(10-3•7)+8-5•4]​

Answer 1

Vamos lá

-20-6•[-1)•(10-3•7)+8-5•4]

-20-6•[(-1)•(10-21)+8-20]

-20-6•[(-1)•(-11)+8-20]

-20-6•[+11+8-20]

-20-6•[+19-20]

-20-6•(-1)

-20+6

-14 ✓