Question

solve by systematic method and verify the solution y+7=21

Answer 1

Answer:

Solve the equation x – 7 = 4 and check the result.

Solution:

We have, x – 7 = 4.

In order to solve this equation, we have to get x by itself on the L.H.S. To get x by itself on the L.H.S., we need to shift -7. This can be done by adding 7 to

both sides of the given equation.

x – 7 = 4

=> x – 7 + 7 = 4 + 7 { By Adding 7 to both sides }

=> x + 0 = 11 { Since, 4 + 7 = 11 }

=> x = 11 { Since, x + 0 = x }

So, x = 11 is the solution of the given equation

Step-by-step explanation:

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Answer 2

Answer:

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