1.

Evaluate : a. 721 - 567 + 382 - (345 - 487) b. 823 - 535 + 489 - (521 - 278) c. 4 + 12 + (-7) + (-8) d. (-23) + 19 + (-13) + 6 e. 4567 + (-6234) + (76) + (-345) + 74 f. |8 - 10| g. |-15 + 9| h. |20 - 23| i. |-30 + 16| j. |3 - (9 - 1)| k. |21 - (39 - 11)|

Answer»


ANSWER :`{:(a.,678,b.,534,c.,1),(d.,-11,E.,-1862,f.,2),(g.,6,h.,3,i.,14),(j.,5,k,7,,):}`


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