Question

Check whether x = ‒2 is a solution to the equation 7x + 5 = 9 or not.

Answer 1

Step-by-step explanation:

ANSWER:-

Steps to be Followed :-

• First if all, we need to check or verify it
• We will first place the value of x
• Then we will simplify it
• And during simplification we will use BODMAS method.

Given Polynomial:-

$7x + 5 = 9$

Placing the Value of x as -2,

$7( - 2) + 5 = 9$

$- 14 + 5 = 9$

$- 9 \neq \: 9$

So, it is Not possible.

So, which value is Possible?

• Assume x to find
• Now we will again follow the same steps:-

$7x + 5 = 9$

$7x = 9 - 5$

$7x = 4$

$x = \frac{4}{7}$

So, if 4/7 is put here, this equation is Possible.

More to Know:-

BODMAS:-

• Full form is Brackets of Division,Multiplication , Addition and Subtraction
• According to this, we need to solve first whichever and whatever is present in Bracket first
• Then we need to carry out division
• Next we will Multiply
• Followed by Addirion and at last , subtraction
• If we do not follow it, chances are there that our results will be wrong.

Answer 2

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${\mathcal{\underline{\red{To\: FinD}}}}$

x = ‒2 is a solution to the equation 7x + 5 = 9 or not.

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${\mathcal{\underline{\red{SolutioN}}}}$

$7x + 5 = 9 \:$

Placing the Value of x as -2,

$7( - 2) + 5 =9 \\ </p><p>- 14 + 5 = 9$

$- 9 \neq \: 9$

So, it is Not possible.

Follow the same steps -

$7x + 5 = 9 \\ </p><p>7x = 9 - 5\\ </p><p>7x = 4\\ </p><p>x = \frac{4}{7} \:$

So, if

$\boxed {\frac{4}{7} }$is put here, this equation is Possible.

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