Question

resolva as expressoes numericas

a) 18+524-[28-(6+12)]-12

b) 20+[(16+12-8)-14]-4

c) 23+[(8-5+2)-4]

Answer 1

18 + 524 - [ 28 - ( 6 + 12 ) ] - 12
18 + 524 - [ 28 - ( - 6 ) ] - 12
18 + 524 - [ 28 + 6 ] - 12
18 + 524 - 34 - 12
542 - 34 - 12
508 - 12
496

20 + [ ( 16 + 12 - 8 ) - 14 ] - 4
20 + [ ( 20 ) - 14 ] - 4
20 + [ 6 ] - 4
26 - 4
22

23 + [ ( 8 - 5 + 2 ) - 4 ]
23 + [ ( 5 ) - 4 ]
23 + [ 1 ] 
24