Question

Resolva ( -10 ) . ( +5 ) + ( +5 ). ( -3 )

Answer 1

(-10) . (+5) + (+5) . (-3) = 
-50  +   (-15) = 
-50 - 15 = - 65

Answer 2

Resolver multiplicacoes primeiro
(-10)(5)     +   (5) (-3)  
(-50) + (-15)
-50-15
-65