Question

Evaluate this expression for x= 3.1.
7x-5
The value of the expression is​

Answer 1

Answer is 16.7

Explanation:

`Given \: expression \: is \: \: 7x - 5 \\ tofind \: the \: value \: of \: the \: expression \: \\ when \: x = 3.1 \\ on \: substituting \: x = 3.1 \: in \: the \: given \: expression \\ 7x - 5 = 7(3.1) - 5 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: = 21.7 - 5 \\ \: \: \: \: \: \: \: \: \: \: \: \: \: = 16.7`

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Answer 2

Evaluate this expression for

x= 3.1 [Given]

Now,

7x - 5

Putting the value of x

⇒ 7 × 3.1 - 5

⇒ 21.7 - 5

⇒ 16.7

The value of the expression is 16.7