Question

If a=3 is a solution of the equation 3a - 1 =7​

Answer 1

Answer:

3 × ( 3 ) - 1 = 7

9 - 1 = 7

8 =7 ( not equal)

so, a = 3 is not possible

Step-by-step explanation:

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Answer 2

Given : a = 3

equation : 3a - 1 = 7

Note : We have to check whether a = 3 is a solution of this equation or not. So let's put the value of a in this equation.

⇒ 3a - 1 = 7

⇒ 3 × 3 - 1 = 7

⇒ 9 - 1 = 7

⇒ 8 ≠ 7

LHS is not equal to RHS

hence, a = 3 is not a solution

of the equation 3a - 1 = 7

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