Question

Explain how you can tell if the expressions 7x – 4 and 6x – 4 – x are equivalent.

Answer 1

Answer:

They are not equivalent.

Look at the explanation section to know why and check out the attachment.

Explanation:

One way is to check it graphically. I will put in the equations into a graphing calculator to show you that these expressions are not equivalent. Please see the attachment.

The other way is to check it algebraically.

First combine like terms in the second expression.

6x-4-x=5x-4

7x-4 and 5x-4 are not equivalent.

Hope this helps!

If not, I am sorry.

Answer 2

Answer:

they cannot be equivalent, if you remove the -4, you have 7x on one side and 6x on the other, which are not of equal value

Explanation:

Explain how you can tell if the expressions

7x – 4 and 6x – 4 – x are equivalent.

they cannot be equivalent, if you remove the -4, you have 7x on one side and 6x on the other, which are not of equal value

7x - 4 = 6x - 4

7x = 6x

the equation is false