Question

3. Find the value of the expression 3x-7 when x = 1
A. 4
B. -4
C. 10​

Answer 1

Answer:

-4

Step-by-step explanation:

3x-7 where x = 1

so 3×1 = 3

Now , 3-7 = -4

Answer 2

The value of the expression 3x - 7 when x = 1 is - 4

Given :

The expression 3x - 7

To find :

The value of the expression 3x - 7 when x = 1 is

A. 4

B. - 4

C. 10

Solution :

Step 1 of 2 :

Write down the given expression

Here the given expression is 3x - 7

Step 2 of 2 :

Find value of the expression when x = 1

Now the value of the expression 3x - 7 when x = 1 is obtained by putting x = 1 in the expression 3x - 7

So the required value

$\displaystyle \sf{ = (3 \times 1) - 7}$

$\displaystyle \sf{ =3 - 7}$

$\displaystyle \sf{ = - 4}$

Hence the correct option is B. - 4

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