Question

-[x+(7-x)-(5+2x)] quero com conta montada

Answer 1

-[x+(7-x)-(5+2x)]
-[x+7-x-5-2x]
-[2-2x]
-2+2x

Answer 2

-[x+(7-x)-(5+2x)]
-[x+7-x-5-2x]
-[-2x+2]
+2x-2