Question

find the equation in appropriate
property-
2/7*-3/5-1/21-3/7*3/5​

Answer 1

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➡➡➡Expression \frac{2}{5}\times \frac{-3}{7} -\frac{1}{14}-\frac{3}{7}\times\frac{3}{5}

➡➡To find : The expression using appropriate properties ?

Solution :

\frac{2}{5}\times \frac{-3}{7} -\frac{1}{14}-\frac{3}{7}\times\frac{3}{5}

Applying commutative property, a+b=b+a

=\frac{2}{5}\times \frac{-3}{7}-\frac{3}{7}\times\frac{3}{5} -\frac{1}{14}

Applying distributive property, ab+ac=a(b+c)

=\frac{-3}{7}(\frac{2}{5}+\frac{3}{5})-\frac{1}{14}

=\frac{-3}{7}(\frac{5}{5})-\frac{1}{14}

=-\frac{3}{7}-\frac{1}{14}

Taking LCD and solve,

=\frac{-6-1}{14}

=\frac{-7}{14}

=\frac{-1}{2}

Therefore, \frac{2}{5}\times \frac{-3}{7} -\frac{1}{14}-\frac{3}{7}\times\frac{3}{5}=-\frac

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Answer 2

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