Question

3) Calcule as expressões:

b) 25+{12+[2-(8-6)+2]}=


c) 45+{15-[(10-8)+(7-4)-3]-4}=


d)65-{30-[20-(10-1+6)+1]}=​

Answer 1

b)25+[12+(2-2+2)]
25+(12+2)
25+14
39
c)45+[15-(2+3-3)-4]
45+(9)
54
d)65-[30-(20-15)+1]
65-(26)
39