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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Grade 7 - Mathematics
6.17 Solution of Simple Equations - I

Example: Solve the equation x+6=8.
Solution:
The unknown quantity x is on the L.H.S. of the equation and 6 is added to it. To remove 6 from L.H.S., perform the inverse operation of addition i.e., subtraction. Hence subtracting 6 from both sides of the equation, we get
x+6-6 = 8-6
x=2

Verification: Substituting x=2 in the equation,
L.H.S.x+6 = 2+6 = 8 = R.H.S.
\x=2 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: 7+x = 15
Answer:

Q 2: x+19 = 20
Answer:

Q 3: x+20 = 30
Answer:

Q 4: x+9 = 20
Answer:

Q 5: 4+x = 10
Answer:

Q 6: 15+x = 16
Answer:

Q 7: 9+x = 3
Answer:

Q 8: x+9 = 13
Answer:

Question 9: This question is available to subscribers only!

Question 10: This question is available to subscribers only!


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