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Consider the equation x 15 = 40.

a. Describe how to solve the equation. What is the solution?
b. Does x + ( 15) = 40 have the same solution? How do you know?

2 answers

Does x 15 = 40
mean x * 15 = 40?
If so, how do you get x by itself?
You divide by 15, so

x = 40/15 = 8/3

now, unwind the + the same way.

On the other hand,
x+15 = 40
is exactly like
x+(15) = 40
Answers please
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