Question

5+3-1=
10-3+7=
-5-4-3=
1-8+8=
4+5+3-7-2-8=
7+15-3+9-4-1=
-53+79-18-7+15-39+18=
-43+13-104+300-148+31=

Answer 1

5+3-1=7
10-3+7=14
-5-4-3= -12
1-8+8=1
4+5+3-7-2-8= -5
7+15-3+9-4-1=23
-53+79-18-7+15-39+18= -5
-43+13-104+300-148+31=49
espero ter ajudado!!!☺