Solve: Combining Like Terms in (+3x) + (-3x)

(+3x)+(−3x)= ? (+3x)+(-3x)=\text{ ?}

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Step-by-step video solution

Watch the teacher solve the problem with clear explanations
00:00 Simply
00:03 Let's take 3X in the positive direction on the axis
00:07 Now subtract 3X in the negative direction on the axis
00:12 And that's the solution to the question

Step-by-step written solution

Follow each step carefully to understand the complete solution
1

Understand the problem

(+3x)+(−3x)= ? (+3x)+(-3x)=\text{ ?}

2

Step-by-step solution

Firstly, we will draw a number line and label 3x x on it.

Since we have -3x x in parentheses, we need to move 3 steps to the left on the number line:

3X3X3X000

Remember the rule:

+(−x)=− +(-x)=-

Therefore, we can write the exercise as follows:

3x−3x=0 3x-3x=0

3

Final Answer

0 0

Practice Quiz

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a is negative number.

b is negative number.

What is the sum of a+b?

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