Addition and Subtraction of Algebraic Expressions

Rani earns $200$ on the first day and spends some amount in the evening. she earns $300$ on the second day and spends double the amount as she spends on the first day  she earns $400$on the third day and  spends $4$ times the amount as spents on the first day. Can you give an algebraic expression of the total amount with her at the end of the third day. 

Mani and his friend Mohamed went to a hotel to dinner. Mani had $2$ idlies and $2$ dosas whereas Mohamed had $4$ idlies and $1$ dosa . If the price of each idly and dosa is $x$ and $y$ respectively find the bill amount $x$ and $y$.

Subtract $2x-5y from 4x+3y$

Add: $3x-4y+z$ and $2x-z+3y$

Simplify :$100x+99y-98z+10x+10y +10z-x-y+z$

Subtract: $5x+7 from 21x +9$

Subtract $-a$ from $a$.

Subtract : $7pq from 11pq$

Add the expressions : $8x+3 and 1-7x$

What should be subtracted from $2m+8n+10$ to get $-3m+7n+16$?

Find the expression to be added with $5a-3b+2c$ to get $a-4b-2c$.

From the sum of $5x+7y-12$ and $3x-5y+2$, subtract the sum of $2x-7y-1$ and $-6x+3y+9$.

How much smaller is $2ab+4b-c$ than $5ab-3b+2c$.

Find the perimeter of a triangle whose sides are $x+3y, 2x+y, x-y$.

What should be added to $3x+6y$ to get $5x+8y$?

Simplify:

$\mathrm{n}+(\mathrm{m}+1)+(\mathrm{n}+2)+(\mathrm{m}+3)+(\mathrm{n}+4)+(\mathrm{m}+5)$

Simplify:

$\mathrm{p}+\mathrm{p}+2+\mathrm{p}+3-\mathrm{p}-4-\mathrm{p}-5+\mathrm{p}+10$

Simplify:

$(\mathrm{x}+\mathrm{y}-\mathrm{z})+(3\mathrm{x}-5\mathrm{y}+7\mathrm{z})-(14\mathrm{x}+7\mathrm{y}-6\mathrm{z})$

Subtract:

$2\mathrm{y}+\mathrm{z}$ from $6\mathrm{z}-5\mathrm{y}$

Subtract:

$\mathrm{m}+\mathrm{n}$ from $3\mathrm{m}-7\mathrm{n}$