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Lilit [14]
3 years ago
13

I need some tips and examples for subtracting integers. Appreciated!

Mathematics
2 answers:
Tcecarenko [31]3 years ago
5 0

one tip:

Example: 4 - (-3)

it instantly becomes positive because the negatives are close to each other as shown.

hope that helps :)

gavmur [86]3 years ago
5 0

Since an integer is any whole (not fractional) number on the number line, all you have to do is move to the left however many units you're subtracting by <em>from </em>the point given. Say the problem is 3 - 7. This means we start at 3, and move to the left 7 units, which lands us at -4. However, if we had a problem like 12 - (- 2), the two negatives would cancel out, meaning we will move to the <em>right</em> 2 units on the number line, or 12 + 2, which is 14. Some other examples are:

-12 - 4, (you should get -16)

3 - 8, ( you should get -5)

16 - (- 3), ( you should get 19)

I hope these tips helped you out! I know that when I first had to subtract integers, using a number line really helped me out. Eventually, it'll just be a natural thing. :D

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Cameron's uncle is 3 times old as he is. 4 years ago, he was 4 times older. How old is Cameron?
erma4kov [3.2K]

Let Cameron be x years old now.

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<u>Now:</u>

Cameron = x

Uncle =3x

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<u>4 years ago:</u>

Cameron = x - 4

Uncle = 3x - 4

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<u>4 years ago, Uncle is 4 times older:</u>

3x - 4 = 4(x - 4)

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<u>Find x:</u>

3x - 4 = 4(x - 4)

3x - 4 = 4x - 16

4x - 3x = 16 - 4

x = 12

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<u>Find the age:</u>

Cameron = x = 12

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Answer: Cameron is 12 years old now.

3 0
3 years ago
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Evaluate this expression using the given values for x and y.
nataly862011 [7]

Answer:

The answer is 33.

Step-by-step explanation:

4x^2 + 13 - 2y, x=3 y=8

In order to evaluate this, you just need to plug the x and y in the expression:

= 4(3)^2 + 13 - 2(8)

= 4(9) + 13 - 16

= 36 + 13 - 16

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5 0
3 years ago
What is x divided by 7=9?
Arturiano [62]
Multiply 7 by 9 and you will get 63 which is x.
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3 years ago
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The difference of 8 less a number n, multiplied by twelve, is equal to 3 more than the number. Which of the following equations
makkiz [27]

Answer:

The equation that can be used to find the missing number is 96 - 12n = 3 + n

Step-by-step explanation:

The difference of 8 less a number n

This is 8 - n

Multiplied by twelve

This is:

12(8 - n) = 96 - 12n

Is equal to 3 more than the number.

96 - 12n = 3 + n

The equation that can be used to find the missing number is 96 - 12n = 3 + n

3 0
3 years ago
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Mumz [18]
0 + -4 = -4 

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So -4 stays the same:)

Answer = -4 

Good Luck! :)
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3 years ago
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