CPM Homework Help : CC3MN Problem 3-74

For the following equations, solve for $x$ . Be sure to check your answer, if possible. Show all work.

$−3x=x−(6−2x)$
Hint (b):
Follow the steps in part (a).
More Help (b):
How does the negative sign in front of the parentheses change what is inside?

Use a diagram of the Equation Mat or some other method to explain why $−(x−3)=−x+3$ .
Hint (c):
Refer to the Math Notes box in Lesson 2.1.9 if you need more help with using an Equation Mat.