Forming Equation from Solution

Q. Frame an equation for the statement: "A number is four times another number and their difference is 12".

1. 4x=12
2. 4x-x=12
3. 5x=15
4. x+4x=12

Q. Which of the following equations can be formed starting with $x=0$?

1. $2x+1=-1$
2. $3x-1=3$
3. $\frac{x}{2}+5=7$
4. $3x-1=-1$

Q.

Which of the following equations can be formed from the equation 'x = 3'?

1. x/3 = 1

2. 3x = 8

3. 3x + 20 = 19

4. 5x = 9

Q. Find the simplest form of the equation $30x+10=40$.

1. $3x+1=4$.
2. $x=1$.
3. $x=3$.
4. $\frac{1}{3}\times x=3$.

Q. Match the given statements with the corresponding algebraic expressions

1. 2x
2. x2
3. x+2

Q. Andy has ₹ x in his pocket and he spent ₹ 250 on his hair cut and ₹ 115 on his face wash. The amount left with him is ₹ 1175. Find the value of x.

Q.

Which of the following equations can be formed starting with x = 0?

1. $\frac{x}{2}+5=7$
2. 2x + 1 = -1
3. 3x - 1 = - 1
4. 3x - 1 = 1

Q. Which of the following equations cannot be formed using the equation x = 7?

1. 2x + 1 = 15
2. 7x - 1 = 50
3. x - 3 = 4
4. $\frac{x}{7}-1=0$

Q. The price of Rama's pen is 20 less than three times the price of Raghu's pen. What is the correct equation representing the problem if we take the price of Rama's pen as $x$ and the price of Raghu's pen as $y$?

1. $x=3y-20$
2. $y=3x-20$
3. $x=3y+20$
4. $y=3x+20$

Q.

Which of the following equations has a solution of x = 3?

1. $8x-10=2x-16$

2. $7x=28$

3. $2x-3=3x-6$

4. $5x=15$