a) 2,8 : 3.2= 2.1 : y
3.2 × 2.1 : 2.8=y
y= 2.4
b)
[tex]x \div 5 \frac{2}{3} = 1 \frac{7}{9} \div 1 \frac{7}{27} [/tex]
[tex]x \div \frac{17}{3} = \frac{16}{9} \div \frac{34}{27} [/tex]
[tex]x = \frac{16}{9} \times \frac{27}{34} \times \frac{17}{3} [/tex]
x=8
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Answers & Comments
a) 2,8 : 3.2= 2.1 : y
3.2 × 2.1 : 2.8=y
y= 2.4
b)
[tex]x \div 5 \frac{2}{3} = 1 \frac{7}{9} \div 1 \frac{7}{27} [/tex]
[tex]x \div \frac{17}{3} = \frac{16}{9} \div \frac{34}{27} [/tex]
[tex]x = \frac{16}{9} \times \frac{27}{34} \times \frac{17}{3} [/tex]
x=8
x-умножение -5/9 - дробь
2)a)2,8:3,2=2,1:Y
2)б)x:5 2/3=1 7/9:1 7/27