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Elisabetafrum
a fost răspuns

a) [(x-1):100+90]:10-10= 0
x=?

b) [(x+270:3)•5+100]:600=1
x=?

Răspuns :

[(x-1)/100+90]/10-10=0

[(x-1)/100+90]/10=10

(x-1)/100+90=100

(x-1)/100=10

x-1=1000

x=1001;

[(x+270/3)*5+100]/600=1

(x+90)*5+100=600

(x+90)*5=500

x+90=100

x=10


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