Parts of a linear equation

Q. $\frac{(3-k)}{(x+3)}=\frac{(2+5k)}{(x+2)}$.

If k = 4 in the above expression, then what is the value of x?

1. $\frac{-68}{23}$
2. $\frac{64}{21}$
3. $\frac{-64}{23}$
4. $\frac{68}{21}$

Q. If 3x + 5 = 11

Which of the following value of x will satisfy the given equation?

1. 3
2. 2
3. 0
4. 1

Q. Match the value of x in each case;

1. ${45}^{\circ }$
2. ${135}^{\circ }$
3. ${120}^{\circ }$