Question

me ajudem pfvr
a) 1-[(4-3)+25]-3.7
b)7-{2-[2.5-(4+6)]}
c)8.5+(3+8).2-[4-(2+3).5]​

Answer 1

a) 1-[(4-3)+25]-3.7
= 1 - [1 + 25] - 21
= 1 - 26 - 21
= - 25 - 21
= - 46

b)
= 7-{2-[2.5-(4+6)]}
= 7 - {2 - [10-10]}
= 7 - {2 - 0}
= 7 - 2
= 5

c)
= 8.5+(3+8).2-[4-(2+3).5]​
= 40 + 11.2 - [4-5.5]
= 40 + 22 - [4-25]
= 62 - [-21]
= 62 + 21
= 83