a) -(-276 + 425 - 13) + (13 + 425 - 276)

= 276 - 425 + 13 + 13 + 425 - 276

= 26

b) (41 - 16 + 54) - (-56 - 59 + 16) + (47 + 23)

= 41 - 16 + 54 + 56 + 59 + 16 + 47 + 23

= 41 + 54 + 56 + 59 + 47 + 23

= 280

c) (49 + 63 - 17) + (19 + 37) - (49 - 17)

= 49 + 63 - 17  + 19 + 37 - 49 + 17

= 63 + 37 + 19

= 119

d) - (15 + 76 - 24) + (49  - 32 + 76 - 43)

= -15 - 76 + 24 + 49 - 32 + 76 - 43

= -15 + 24 + 49 - 32 - 43

= -17

e) (25 + 19 - 84) - (17 + 25 - 21) + (-52 + 13)

= 25 + 19 - 84 - 17 - 25 + 21 - 52 + 13

= 19 - 84 - 17 + 21 - 52 + 13

= -100

a) -(-276 + 425 - 13) + (13 + 425 - 276)

= 276 - 425 + 13 + 13 + 425 - 276

= 26

b) (41 - 16 + 54) - (-56 - 59 + 16) + (47 + 23)

= 41 - 16 + 54 + 56 + 59 + 16 + 47 + 23

= 41 + 54 + 56 + 59 + 47 + 23

= 280

c) (49 + 63 - 17) + (19 + 37) - (49 - 17)

= 49 + 63 - 17  + 19 + 37 - 49 + 17

= 63 + 37 + 19

= 119

d) - (15 + 76 - 24) + (49  - 32 + 76 - 43)

= -15 - 76 + 24 + 49 - 32 + 76 - 43

= -15 + 24 + 49 - 32 - 43

= -17

e) (25 + 19 - 84) - (17 + 25 - 21) + (-52 + 13)

= 25 + 19 - 84 - 17 - 25 + 21 - 52 + 13

= 19 - 84 - 17 + 21 - 52 + 13

= -100

a) -(-276 + 425 - 13) + (13 + 425 - 276)

= 276 - 425 + 13 + 13 + 425 - 276

= 26

b) (41 - 16 + 54) - (-56 - 59 + 16) + (47 + 23)

= 41 - 16 + 54 + 56 + 59 + 16 + 47 + 23

= 41 + 54 + 56 + 59 + 47 + 23

= 280

c) (49 + 63 - 17) + (19 + 37) - (49 - 17)

= 49 + 63 - 17  + 19 + 37 - 49 + 17

= 63 + 37 + 19

= 119

d) - (15 + 76 - 24) + (49  - 32 + 76 - 43)

= -15 - 76 + 24 + 49 - 32 + 76 - 43

= -15 + 24 + 49 - 32 - 43

= -17

e) (25 + 19 - 84) - (17 + 25 - 21) + (-52 + 13)

= 25 + 19 - 84 - 17 - 25 + 21 - 52 + 13

= 19 - 84 - 17 + 21 - 52 + 13

= -100

a) -(-276+425-13)+(13+425-276)

=276-425+13+13+425-276

=(276-276)+(425-425)+(13+13)

=26
b) (41-16+54)-(-56-59+16)+(47+23)

=41-16+54+56+59-16+47+23

=(41+59)-(16+16)+(47+23)+(54+56)

=100-32+70+110

=248
c)(49+63-17)+(19+37)-(49-17)

=49+63-17+19+37-49+17

=(17-17)+(63+37)+(49-49)+19

=100+19

=119
d)-(15+76-24)+(49-32+76-43)

=-15-76+24+49-32+76-43

=(76-76)-(15+43+32)+(24+49)

=-90+73

=-17
e)(25+19-84)-(17+25-21)+(-52+13)

=25+19-84-17-25+21-52+13

=(25-25)+(19+21)-(84+17+52)+13

=(40+13)-153

=-100