Question

(1/3 + 0.25)(1 + 5/7)

Answer 1

$( \frac{1}{3} + \frac{25}{100} ) \times ( \frac{1}{1} + \frac{5}{7} )$

$( \frac{100}{300} + \frac{75}{300} ) \times ( \frac{7}{7} + \frac{5}{7})$

$\frac{175}{300} \times \frac{12}{7} = \frac{2100}{2100} = 1$

Answer 2

(1/3+0,25)(1+5/7)=

(1/3+25/100)(1/1+5/7)=

(1/3+1/4)(7/7+5/7)=

(4/12+3/12)(12/7)=

7/12 ori 12/7=

simplifici 12 cu 12 si 7 cu 7

si ramane 1