Question

20-{2•[5+(6-2•3)]-6}+8÷2

Answer 1

Resposta:

20-{2.[5+(4.3)]-6}+8÷2

20-{2.[5+12]-6}+8÷2

20-{2.17-6}+8÷2

20+{34-6}+8÷2

20+28+8÷2=

20+36÷2=

20+18=

38