Question

pls do Q15
pls pls pls
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Answer 1

$\begin{aligned}&\text{LHS}\\\\\implies\ \ &\dfrac{2^{30}+2^{29}+2^{28}}{2^{31}+2^{30}-2^{29}}\\\\\implies\ \ &\dfrac{2^{28+2}+2^{28+1}+2^{28}}{2^{28+3}+2^{28+2}-2^{28+1}}\\\\\implies\ \ &\dfrac{2^{28}(2^2+2+1)}{2^{28}(2^3+2^2-2)}\\\\\implies\ \ &\dfrac{4+2+1}{8+4-2}\\\\\implies\ \ &\dfrac{7}{10}\\\\\implies\ \ &\text{RHS}\end{aligned}$

Hence Proved!