👤
a fost răspuns

8 pg 147 .....cls a 5 a.... culeg. Sem. 1.....paralela 45

8 Pg 147 Cls A 5 A Culeg Sem 1paralela 45 class=

Răspuns :

Lazarelias2007

Răspuns:

a)2 22/25÷9/4÷4/5=

=2×25+22/25÷2,25÷0,8=

=72/25÷2,25÷0,8=

=2,88÷2,25÷0,8=

=1,28÷0,8=

=1,6

b)2 26/27÷4/9÷5/3=

=2×27+26/27÷4/9÷5/3=

=80/27÷4/9÷5/3=

=20/3÷5/3=

=4/1=

=4

c)1 11/49÷16/21÷3/4=

=20/49×17/21×4=

=20/49×21/4=

=20/7×3/4=

=5/7×3=

=15/7

Alte intrebari