Simplify the following expression:
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Simplify the following expression:
Note the following rule:
Now let's write the exercise in the following way:
We'll add negative to the values on the number line and move 3 steps to the left:
Therefore, the solution is:
a is negative number.
b is negative number.
What is the sum of a+b?
Think of it as removing something positive, which moves you in the negative direction. The rule means 'the opposite of positive x is negative x'.
Both terms have the same variable x, so add their coefficients: . The result is .
The same rule applies! and , so you get .
Absolutely! Start at , then move 3x units to the left (subtracting). You'll land at on the number line.
Both terms are negative: and . When you add two negative numbers, the result is always negative and larger in magnitude.
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