Question

A)5 1/4 : (4,8s)=3 1/8 : 7,5
б)2 1/2: 8 1/3=5,4 : (2,7c)
РЕШИТЕ УРАВНЕНИЕ

Answer 1

$a)5 frac{1}{4} div (4.8s) = 3 frac{1}{8} div 7.5 \ \ 5 frac{1}{4} times 7.5 =( 4.8s) times 3 frac{1}{8} \ \ frac{21}{4} times frac{15}{2} = frac{24}{5} s times frac{25}{8} \ \ frac{315}{8} = 15s \ \ 15s = frac{315}{8} \ \ s = frac{315}{8} div 15 \ \ s = frac{21}{8} \ \ s = 2 frac{5}{8}$



$b)2 frac{1}{2} div 8 frac{1}{3} = 5.4 div (2.7c) \ \ 2 frac{1}{2} times (2.7c) = 8 frac{1}{3} times 5.4 \ \ frac{5}{2} times ( frac{27}{10}c) = frac{25}{3} times frac{27}{5} \ \ frac{27}{4} c = 45 \ \ c = 45 div frac{27}{4} \ \ c = 6 frac{2}{3}$