Question

what statement makes the open sentence 49-7x=21 true

Answer 1

Simple...if you want to solve this.....

49-7x=21 

Isolate the variable (x)

49-7x=21
-49     -49

-7x=-28

Now, simplify...

$\frac{-7x}{-7} = \frac{-28}{-7} =4$

x=4

Thus, your answer.

Answer 2

Answer:

The value of x = 4 makes the given equation true.

Step-by-step explanation:

Here we have to find what value of x, makes the given equation 49 -7x = 21 true.

To find the value of x, we need to solve for x.

49 - 7x = 21

Step 1: Isolate the variable and constant terms.

Subtract 49 from both sides, we get

-49 + 49 - 7x = 21 - 49

-7x = -28

Step 2: Divide both sides by -7, we get

$\frac{-7x}{-7} = \frac{-28}{-7}$

x = 4

So, the value of x = 4 makes the given equation true.

Check

49 -7x = 21

Plug in x = 4

49 - 7(4) = 21

49 - 28 = 21

21 = 21

Which is true.