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eduard
2 years ago
7

-7a - 6a simplifyed?

Mathematics
1 answer:
Jobisdone [24]2 years ago
8 0

Answer:

-13a

Step-by-step explanation:

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Evaluate -1-3-(-9)+(-5)
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To evaluate this expression, we need to remember that subtracting a negative number is the same as adding a positive number, and that adding a negative number is the same as subtracting a positive number. Using this knowledge, let's begin to simplify the expression below:

-1 - 3 - (-9) + (-5)

Because addition of a negative number is the same as subtraction of a positive number, we can change + (-5) to -5, as shown below:

-1 - 3 - (-9) - 5

Next, because we know that subtracting a negative number is the same as adding a positive number, we can change - (-9) to + 9, as shown below:

-1 - 3 + 9 - 5

Now, we can subtract the first two terms and begin to evaluate our expression:

-4 + 9 - 5

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5 - 5

Now, we can subtract our last two numbers, which gives us our answer:

0

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Hope this helps!

3 0
3 years ago
Write the prime factorization of each number using exponents 20
weqwewe [10]
The number 20<span> is a composite number so, it is possible to factorize it. In other words, 20 can be divided by 1, by itself and at least by 2 and 5. A composite number is a positive integer that has at least one positive divisor other than one or the number itself. In other words, a composite number is any integer greater than one that is not a prime number.</span>

<span>The prime factorization of </span>20<span> = 2</span>2•5.

<span>The prime factors of </span>20<span> are 2 and 5.</span>
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