Question

(-1).(-5) (+9).(-7) (-11).(+7) (+11).(+3) (7-).(-7) 0.(-10) (-12).(+23) (-16).(-6) (-12).(12) (-20).(+15)​

Answer 1

Resposta:

(-1).(-5) = 5

(+9).(-7) = -63

(-11).(+7) = -77

(+11).(+3) = 33

(-7).(-7) = 49

0.(-10) = 0

(-12).(+23) = -276

(-16).(-6) = 96

(-12).(12) = -144

(-20).(+15) = -300