Question

Помогите решить!!
Формула -3+5=+(5-3)
-100+5=
-200+7=
-30+40=
40-60=
50-78=
100-200=
Формула -3-5=-(3+5)
-(-a)=+a
-10-20=
-3-7=
-12-16=
-(-12)-3=
-(-7)+1=
-9+(-10)=
Пожалуйста помогите!!!

Answer 1

-100+5 = +(5-100)= -95
-200+7 = +(7-200)= -193
-30+40 = +(40-30)=10
40-60= -20
50-78= -28
100-200 = -100

-10-20= -(10+20)= -30
-3-7= -(3+7)= -10
-12-16= -(12+16)= -28
-(-12)-3= -(3-12)= 9
-(-7)+1 = 7+1 = 8
-9+(-10)= -9-10= -(9+10)=-19