Question

Solve the equation 7x+2=9 by inspection method.

• A. 0.0
• B. 1
• C. 2
• D. 3

Answer 1

The correct option is B 1

We need to find the value of x.

Given: 7x+2=9
Let's take x=0 and substitute in the given equation. We get..

7(0)+2=9
$\Rightarrow$ 0+2=9
$\Rightarrow$ 2=9

We see that LHS is not equal to RHS.
So, x=0 is not the solution.

Let's take x=1 and substitute in the given equation. We get..

7(1)+2=9
$\Rightarrow$ 7+2=9
$\Rightarrow$ 9=9

We see that LHS is equal to RHS.
So, x=1 is the solution.

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