Question

quanto e a- 23+15+(21+11 ) b (10+12)+5 c 123+(124+82)+(11+736) d 222+42+(1983+234)+342+(5342+32)+(2543+7362) e (37+432)+(5432+7896)

Answer 1

a)

$23 + 15 + (21 + 11) \\ 23 + 15 + 32 \\ 38 + 32 \\ 70$

b)

$(10 + 12) + 5 \\ 22 + 5 \\ 27$

c)

$123 + (124 + 82) + (11 + 736) \\ 123 + 206 + 747 \\ 329 + 747 \\ 1076$

d)

$222 + 42 + (1983 + 234) + 342 + (5342 + 32) + (2543 + 7362) \\ 222 + 42 + 2217 + 343 + 5374 + 9905 \\ 264 + 2560 + 15279 \\ 2824 + 15279 \\ 18103$

e)

$(37 + 432) + (5432 + 7896) \\ 469 + 13328 \\ 13797$