Question

7-3/14-1/7+(17/3×78/5)=?

Answer 1

Ответ:

1)17/3•78/5=17•78/3•5=1326/15=88 6/15=88 2/5

2)7-3/14=6 11/14

3)6 11/14-1/7=6 11/14-2/14=6 9/14

4)6 9/14+88 2/5=94 45/70+28/70=94 73/70=95 3/70

Answer 2

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$7-\frac{3}{14}-\frac{1}{7}+\frac{442}{5} =$

$\frac{95}{14}-\frac{1}{7}+\frac{442}{5}=$

$\frac{95}{14}-\frac{2}{14} +\frac{442}{5} =$

$\frac{95-2}{14} + \frac{442}{5}=$

$\frac{93}{14}+\frac{442}{5}=$

$\frac{465}{70}+\frac{6188}{70}=$

$\frac{465+6188}{70}=$

$\frac{6653}{70} =95\frac{3}{70}$

ответ: 95. 3/70