Question

5 linear equation in one variable questions. Please help​

Answer 1

$\mathbb{7.)}$$\textbf{\underline{\red{\large{Step by step Explanation:-}}}}$

$\mathcal{\underline{Given}}$

$\mathtt{perimeter=23cm}$

$\mathtt{length(l)=3\frac{3}{4}}$

$\mathtt{width(w)=?}$

$\textbf{\underline{Hence,,}}$

$\texttt{perimeter of rectangle=2(l+w)}$

$\mathtt{\implies{23=2((3\frac{3}{4})+w)}}$

$\mathtt{\implies{23=2((\frac{15}{4})+w)}}$

$\mathtt{\implies{23=\frac{15}{2}+2w}}$

$\mathtt{\implies{23-\frac{15}{2}=2w}}$

$\mathtt{\implies{\frac{46-15}{2}=2w}}$

$\mathtt{\implies{\frac{31}{2}=2w}}$

$\mathtt{\implies{\frac{31}{2\times{2}}=w}}$

$\mathtt{\implies{\frac{31}{4}=w}}$

$\mathtt{\implies{7\frac{3}{4}=w}}$

$\mathtt{\implies{w=7\frac{3}{4}cm}}$

$\textbf{\underline{Hence,,}}$

$\mathtt{\implies{width=7\frac{3}{4}cm}}$

$\textbf{\pink{\large{Hope it helps you.. thanks}}}$