Finding the Unknown Class 7 Fill in the blanks

Finding the Unknown Class 7 Fill in the blanks

Finding the Unknown Class 7 Fill in the blanks

Question 1.

Sum of two numbers is 81. One is twice the other.

(a) If smaller number is x, the other number is ________.

(b) The equation formed is ______.

(c) The solution of the equation is _________.

(d) The numbers are _______ and ________.

Solution:

(a) 81 - x or 2x, (b) 2x = 81 - x, (c) x = 27, (d) 54, 27

Question 2.

_______ is the solution of the equation 3x - 2 = 7.

Solution:

x = 3

Question 3.

______ is the solution of 3x + 10 = 7.

Solution:

x = -1

Question 4.

In integers, 4x - 1 = 8 has ________ solution.

Solution:

No

Question 5.

x + 7 = 10 has the solution _______.

Solution:

x = 3

Question 6.

x - 0 = _______ ; when 3x = 12.

Solution:

4

Question 7.

If 84 exceeds another number by 12, then the other number is ________.

Solution:

72

Question 8.

If x - [latex]\frac {7}{8}[/latex] = [latex]\frac {7}{8}[/latex], then x = __________.

Solution:

[latex]\frac {7}{4}[/latex]

Finding the Unknown Class 7 True or False

Question 1.

5 is the solution of the equation 3x + 2 = 17.

Solution:

True

Question 2.

[latex]\frac {9}{5}[/latex] is the solution of the equation 4x - 1 = 8.

Solution:

False

Question 3.

4x - 5 = 7 does not have an integer as its solution.

Solution:

False

Question 4.

[latex]\frac {3}{2}[/latex] is the solution of the equation 8x - 5 = 7.

Solution:

True

Question 5.

If 4x - 7 = 11, then x = 4.

Solution:

False

Finding the Unknown Class 7 Match the Following

Match the Column I with Column II.

Solution: