Question

using appropriate properties find 12/5×−3/7−1/21−3/7×3/5.

Answer 1

Answer:

by simplyfying

94 / 105 is the answer

Answer 2

Given,

$\frac{12}{5}\times -\frac{3}{7}-\frac{1}{21}-\frac{3}{7}\times \frac{3}{5}$

We have to simplify the given expression

By using BODMAS rule to simplify the given expression,

B-bracket

O-order of power

D-division

M-multiplication

A-addition

S-subtraction

Now,

$\frac{12}{5}\times -\frac{3}{7}-\frac{1}{21}-\frac{3}{7}\times \frac{3}{5}$

$= -\frac{36}{35}-\frac{1}{21}-\frac{9}{35}$

$=\frac{-36-9}{35}-\frac{1}{21}$

$= -\frac{45}{35}-\frac{1}{21}$

$=-\frac{9}{7}-\frac{1}{21}$

$= \frac{-3\times 9-1}{21}$

$= \frac{-27-1}{21}$

$= \frac{-28}{21}$

$=-\frac{4}{3}$

Therefore, the answer is $-\frac{4}{3}$.