Question

resolva as expressões

Answer 1

a)

20,3 - [ 4,75 - (1,2 + 2,38)] + 5,1
20,3 - [ 4,75 - (3,58)] + 5,1
20,3 - [ 4,75 - 3,58] + 5,1
20,3 - [ 1,17 ] + 5,1
20,3 + 5,1 - 1,17
25,4 - 1,17
= 24,23
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b)
= 15 - (3,25 + 2,7 - 4,08) - 10
= 15 - (5,95 - 4,08) - 10
= 15 - 1,87 - 10
= 15 - 11,87
= 3,13
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c)
= 35,25 - (4,85 - 1,23 + 17,9)
= 35,25 - (3,62 + 17,9)
= 35,25 - (21,52)
= 13,73
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d)
17,352 - 15,2 + 8,3
2,152 + 8,3
= 10,452