Question

3 1/4:(3/4-7/5)-2*1 3/7

Answer 1

3 1/4:(3/4-7/5)-2•1 3/7=-7 6/7
1)3/4-7/5=15/20-28/20=-13/20
2)3 1/4:(-13/20)13/4:(-13/20)=-5
3)2•1 3/7=2/1•10/7=20/7=2 6/7
4)-5-2 6/7=-7 6/7

Answer 2

Sure, let's break it down step by step:

1. Inside the Parentheses: $\frac{3}{4} - \frac{7}{5}$

   To subtract these fractions, we need a common denominator. The common denominator for 4 and 5 is 20.

   $\frac{15}{20} - \frac{28}{20}$

   Now subtract the numerators:

   $\frac{15 - 28}{20} = \frac{-13}{20}$

2. Outside the Parentheses: $\frac{-13}{20} - 2 \times \frac{10}{7}$

   First, multiply 2 by $\frac{10}{7}$:

   $2 \times \frac{10}{7} = \frac{20}{7}$

   Now subtract $\frac{-13}{20}$ and $\frac{20}{7}$:

   $\frac{-13}{20} - \frac{20}{7}$

   To subtract, find a common denominator, which is 140 in this case:

   $\frac{-91}{140} - \frac{200}{140}$

   Subtract the numerators:

   $\frac{-91 - 200}{140} = \frac{-291}{140}$

So, $3 \frac{1}{4} \times \left( \frac{3}{4} - \frac{7}{5} \right) - 2 \times \frac{10}{7}$ is equal to $\frac{-291}{140}$.