Найти x их пропорций
[tex] \frac{17,7-2,6: \frac{4}{3} }{x} = \frac{5- \frac{4}{5}*0,625 }{( \frac{23}{5} + \frac{7}{3}) : \frac{26}{15} } [/tex]
[tex] \frac{17,7-2,6: \frac{4}{3} }{x} = \frac{5- \frac{4}{5}*0,625 }{( \frac{23}{5} + \frac{7}{3}) : \frac{26}{15} } [/tex]
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1)17,7-2,6:4/3=17,7-26/10*3/4=17,7-78/40=17,7-1,95=15,752)5-4/5*0,625=5-0,8*0,625=5-0,5=4,5
3)(23/5+7/3):26/15=(69/15+35/15)*15/26=104/4/15*15/26=4
Получили
15,75:x=4,5:4
x=15,75*4/4,5=63/4,5=14