Question

pls answer these questions asap

Answer 1

Answer:

A)1)a) Additive inverse of $\frac{7}{-10}$=$\frac{-7}{10}$=$\red{\boxed{\frac{7}{10}}}$

$\: \: \:$b) Additive inverse of $\frac{8}{5}$=$\red{\boxed{\frac{-8}{5}}}$

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2) Let one number be 'x'

$\: \: \:$So, $\frac{-11}{5}+x= -4$

$\: \: \:$$\leadsto$$x= -4-\frac{-11}{5}$

LCM of 1,5=5

$\: \: \:$$\leadsto$$x=\frac{-20+11}{5}$

$\: \: \:$$\leadsto$$\sf\orange{\boxed{x=\frac{-9}{5}}}$

Therefore, required answer is $\frac{-9}{5}$

Check :-

$\frac{-9}{5}+\frac{-11}{5}$

$\frac{-9-11}{5}$

$\frac{-20}{5}$

${-4}$

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B)10) $\frac{4}{15}$ (c)

12)$\frac{-4}{5}$ (b)