Question

Efetue os exemplos a seguir I) (+ 8 ) X ( + 7 ); II) ( + 9 ) X ( - 8 ); III) ( - 9 ) : ( + 3 ); IV) ( - 225 ) : ( - 15 ), são:

Answer 1

( + 8 ) .(+ 7) = 56

( + 9 ) . ( - 8 ) = - 72

( - 9 ) . ( : ( + 3 ) = - 3

( - 225 ) : ( - 15 ) = 15