Vaishali Bhatia and Rupesh Pathak Solutions for Chapter: Algebraic Expressions, Exercise 8: Worksheet

Find the perimeter of a triangle with side $\left(3a+1\right) \mathrm{cm}, \left(2b-3c\right) \mathrm{cm}$ and $\left(8a+b+2c\right) \mathrm{cm}$.

If your height is $\left(5x+7\right) \mathrm{cm}$ and the height of your friend is $\left(6x-5\right) \mathrm{cm}$, then what is the sum of your and your friend's height?

If your height is $\left(5x+7\right) \mathrm{cm}$ and the height of your friend is $\left(6x-5\right) \mathrm{cm}$, then how much taller is your friend than you?

On your birthday, you purchased $\left(10x+13\right)$ toffees. Out of these, you distributed $\left(8x-3\right)$ toffees among your friends in school. Now, how many toffees are left with you for your birthday party in the evening?

Find the value of the following expression:

$2a-3b+abc$ at $a=0, b=-2, c=-1$

Find the value of the following expression:

$2b^2+b-1$ at $b=-2$

Find the value of the following expression:

$-20m^{99}+19n^{89}$ at $m=-1, n=1$

Find the value of the following expression:

$3c-5x+6cbx$ at $c=-3, b=1$ and $x=-2$