Question

Va rog sa ma ajutati dau coroana va rog.

Answer 1

1) amplificam pe 1/3 cu 2

1/2+1/4:(2/6+1/6)=1/2+1/4:1/2=1/2+1/4*2=1/2+1/2=2/2=1

2) 13/25*75/26+9/4*10/27=3/2+5/6 amplificam pe 3/2 cu 3

9/6+5/6=14/6=7/3

Answer 2

$\frac{1}{2} + ( \frac{1}{2} ) ^{2} \div ( \frac{2}{6} + \frac{1}{6} ) = \frac{1}{2} + \frac{1}{4} \div \frac{3}{6} = \frac{1}{2} + \frac{1}{4} \div \frac{1}{2} = \frac{1}{2} + \frac{1}{4} \times 2 = \frac{1}{2} + \frac{1}{2} = \frac{2}{2} = 1$
$\frac{13}{25} \times \frac{75}{26} + \frac{9}{4} \times \frac{10}{27} = \frac{3}{2} + \frac{5}{6} = \frac{9}{6} + \frac{5}{6} = \frac{14}{6} = \frac{7}{3} = 2 \frac{1}{3}$