Question

2/19•[0,(7)+0,2(7)]:0,13(8) va rog repede

Answer 1

Răspuns:

2/19×(7/9+25/90):125/900=

2/19×95/90×900/125=

2/19×19/18×36/5=

2/1×1/1×2/5=4/5=0,8

Answer 2

$\it =\dfrac{2}{19}\cdot\Big(\dfrac{^{10)}7}{\ \ 9}+\dfrac{25}{90}\Big):\dfrac{125}{900}=\dfrac{2}{\not19}\cdot\dfrac{\not95\ ^5}{\not90}\cdot\dfrac{\not900\ ^{10}}{125}=\dfrac{\ \ 100^{(25}}{125}=\dfrac{4}{5}$