Question

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

Answer 1

Answer:

Model the second expression using 6 positive x tiles, 4 negative tiles, and then one negative x tile. The negative x tile forms a zero pair with one of the positive x tiles, leaving 5 positive x tiles and 4 negative tiles. This is not equivalent to 7x – 4.

Step-by-step explanation:

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Answer 2

Given;  7x – 4 and 6x – 4 – x

To Find; how you can tell if the expressions 7x – 4 and 6x – 4 – x are equivalent

Solution; This question can be easily solved by letting some value of x and putting in both the equation to check whether both are equal or not

Let x=1

7x-4=3 and 5x-4=1

Since both are not equal Hence the given equations are not equal