Question

Divide the sum of -12/7 and 13/5 by the product of -1/2 and 31/7.pls any one math expert give the answer pls step by step other wise i will report the answer plssssss​

Answer 1

Answer:

-2/5

Step-by-step explanation:

The sum is given -13/5 + 12/7 = -13/5 + 12/7 ((-13×7) + (12×5)) /35 (-91+60)/35 = -31/35

Now, Product of -31/7 and -1/2 = -31/7 × -1/2 = (-31×-1)/(7×2) = 31/14

∴ by dividing the sum and the product we get the value as, = (-31/35) / (31/14) = (-31/35) × (14/31) = (-31×14)/(35×31) = -14/35 = -2/5

Hope this Will help you.

Answer 2

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$\sf \small{Sum \: of \: \frac{ - 12}{ \: \: \: 7} \: and \: \frac{13}{5}}$

$\sf {\small \: \longrightarrow\frac{ - 12}{ \: \: \: 7} \: + \: \frac{13}{5}}$

$\sf {\small \: \longrightarrow\frac{ - 12 \times 5}{ \: \: \: 7 \times 5} \: + \: \frac{13 \times 7}{5 \times 7}}$

$\sf {\small \: \longrightarrow\frac{ - 60}{ \: \: \: 35} \: + \: \frac{91}{35}}$

$\sf {\small \: \longrightarrow\frac{ - 60 + 91}{ \: \: \: 35}}$

$\sf {\small \: \longrightarrow\frac{ 31}{ 35}}$

$\small \sf{Now \: finding \: the \: product \: of \: \frac{ - 1}{ \: \: 2} \: and \: \frac{31}{7} }$

$\sf {\small \: \longrightarrow\frac{ - 1}{ \: \: \: 2} \: \times \: \frac{31}{7}}$

$\sf {\small \: \longrightarrow\frac{ - 1 \times 31}{ \: \: \: 2 \times 7} }$

$\sf {\small \: \longrightarrow - \frac{ 31}{ 14} }$

Now dividing the sum of -12/7 and 13/5 by the product of -1/2 and 31/7.

$\sf {\small \: \longrightarrow \frac{ 31}{ 35} \div \frac{ - 31}{14} }$

$\sf {\small \: \longrightarrow \frac{ 31}{ 35} \times \frac{ \: \: 14}{ -31} }$

$\sf {\small \: \longrightarrow \frac{ 31 \times 14}{ 35 \times - 31} }$

$\sf {\small \: \longrightarrow \frac{ \: \: 434}{ - 1085} }$

$\sf {\small \: \longrightarrow \frac{ \: \: 434 \div 217}{ - 1085 \div 217} }$

$\sf {\small \: \longrightarrow - \frac{ 2}{ 5} }$

So,the final answer is $\sf {\small \: - \frac{ 2}{ 5} .}$

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