Check,whether x = 2 is the solution of the given equations 2x= 4

Check,whether x = 2 is the solution of the given equations 15x = 60

Given n students in the class like football, what may 2n show? What may n/2 show? (Hint Think of games other than football).

Answer the following:
Given Sara's age today to be y years. Think of her age in the future or in the past. What will the following expression indicate?
\(y+7,y-3,y+4\frac{1}{2},y-2\frac{1}{2}\)

Give expressions in the following cases.
Y is multiplied by -5 and the result is added to 16.

Give expressions in the following cases.
y is multiplied by 5 and the result is subtracted from 16

Give expressions for the following cases.
p multiplied by-5

Give expressions for the following cases.
-p divided by 5

Identify the operations (addition, subtraction, division, multiplication) in forming the following expressions and tell how the expressions have been formed.
z + 1,z -1, y + 17, y -17

Which out of the following are expressions with numbers only?
(7\(\times\)20) - (5\(\times\)10) - 45 + P

Write the statements for algebraic expression which are given below:
z÷9

Two equal sides of as isoscales triangle are taken as a cm, and unequal side is taken as b cm. Find its perimeter in terms of a and b.

The sides of a square is taken as x, then find the perimeter and area of square in terms of x.

Find the rule, which gives the number of matchsticks required to make the following matchstick patterns. A pattern of letter Y as
  

Mother has made laddus. She gives some laddus to guests and family members; still 5 laddus remain. If the number of laddus mother gave away is l, how many laddus did she make?