Question

Calcula. a) (+5) (–7) = b) (+9) (–6) = c) (–10) (–5) = d) (+43) (–10) = *

Answer 1

+5-7=-2
+9-6=+3
-10-5=-15
+43-10=+33
Y si es un producto
+5x—7=-35
+9x-6=-54
-10x-5=+50
+43x-10=-430