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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Grade 7 - Mathematics
6.20 Solution of Simple Equations - IV

Example: Solve the equation: 9x = 36
Solution:
The unknown quantity x is on the L.H.S. and is multiplying by 9. To remove 9 from L.H.S., we must do the inverse operation of multiplication i.e., division. Dividing both sides by 9, we get
9x/9 = 36/9
x = 4

Verification:
Substituting x=4 in the equation
L.H.S. 9x = 9 * 4 = 36 = R.H.S.
\ x = 4 is the solution.


Directions: Solve the following equations. Also write at least ten examples of your own and solve for the unknown variable.
Q 1: 13x = 169
Answer:

Q 2: 12x = 144
Answer:

Q 3: 9x = 45
Answer:

Q 4: 2x = 16
Answer:

Q 5: 4x = 16
Answer:

Q 6: 7x = 35
Answer:

Q 7: 14x = 28
Answer:

Q 8: 25x = 125
Answer:

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!


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