Question

расскройте скобки и вычислите
-49 -(-49+2)
100-(-5+100)
(-78+23)+(27+78)
(105-48)-(62+105)

Answer 1

-49 -(-49+2)=-49+49-2=0-2=-2
100-(-5+100)=100+5-100=0+5=5
(-78+23)+(27+78)=-78+23+27+78=0+23+27=50
(105-48)-(62+105)=105-48-62-105=0-48-62=-110

Answer 2

1) (49 -49 )+2 =2
2)(100-100) +5= 5
3)(78 +78 )+ (27 +27 ) = 156 + 54= 210
4)(105 -105 )+(48 +62 ) = 110