Change the following algebraic expression into a statement in the ordinary language:

There are $x$ green beads in a packet. The number of red beads is $\frac{x}{2}$.

Change the following algebraic expression into a statement in the ordinary language:

Sunil is $x$ years old. His wife's age is $x-6$.

Change the following algebraic expression into a statement in the ordinary language:

Anna scored $x$ marks in English. Her score in social science is $x+4$.

Find the value of the following expression:

$7a+1;$ when $a=-2$

Find the value of the following expression:

$3x+1;$ when $x=-4$

Find the value of the following expression:

$7-7x;$ when $x=2$

Find the value of the following expression:

$11x-100;$ when $x=9$

Find the value of the following expression:

$2a+b;$ when $a=1$ and $b=-3$.