Question

Question 2

Complete the entries of the third column of the table:

$\begin{array}{cccc}\text{S.No}& \text{Equation}& \text{Value of Variable}& \text{Equation satisfied Yes/No}\\ \text{(a)}& 10y=80& y=10& \\ \text{(b)}& 10y=80& y=8& \\ \text{(c)}& 10y=80& y=5& \\ \text{(d)}& 4l=20& l=20& \\ \text{(e)}& 4l=20& l=80& \\ \text{(f)}& 4l=20& l=5& \\ \text{(g)}& b+5=9& b=5& \\ \text{(h)}& b+5=9& b=9& \\ \text{(i)}& b+5=9& b=4& \\ \text{(j)}& h-8=5& h=13& \\ \text{(k)}& h-8=5& h=8& \\ \text{(l)}& h-8=5& h=0& \\ \text{(m)}& p+3=1& p=3& \\ \text{(n)}& p+3=1& p=1& \\ \text{(o)}& p+3=1& p=0& \\ \text{(p)}& p+3=1& p=-1& \\ \text{(q)}& p+3=1& p=-2& \end{array}$

Answer 1

$\begin{array}{ccccc}\text{S.No}& \text{Equation}& \text{Value of Variable}& \text{Equ. satisfied Yes/No}& \text{Sol.of L.H.S}\\ \text{(a)}& 10y=80& y=10& \text{No}& 10\times 10=100\\ \text{(b)}& 10y=80& y=8& \text{Yes}& 10\times 8=80\\ \text{(c)}& 10y=80& y=5& \text{No}& 10\times 5=50\\ \text{(d)}& 4l=20& l=20& \text{No}& 4\times 20=80\\ \text{(e)}& 4l=20& l=80& \text{No}& 4\times 80=320\\ \text{(f)}& 4l=20& l=5& \text{Yes}& 4\times 5=20\\ \text{(g)}& b+5=9& b=5& \text{No}& 5+5=10\\ \text{(h)}& b+5=9& b=9& \text{No}& 9+5=14\\ \text{(i)}& b+5=9& b=4& \text{Yes}& 4+5=9\\ \text{(j)}& h-8=5& h=13& \text{Yes}& 13-8=5\\ \text{(k)}& h-8=5& h=8& \text{No}& 8-8=0\\ \text{(l)}& h-8=5& h=0& \text{No}& 0-8=-8\\ \text{(m)}& p+3=1& p=3& \text{No}& 3+3=6\\ \text{(n)}& p+3=1& p=1& \text{No}& 1+3=4\\ \text{(o)}& p+3=1& p=0& \text{No}& 0+3=3\\ \text{(p)}& p+3=1& p=-1& \text{No}& -1+3=2\\ \text{(q)}& p+3=1& p=-2& \text{Yes}& -2+3=1\end{array}$