Algebra help...again lol?

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Makala

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Simplify:
-4 - 3(-2 - 4)

-6+10 over 2 is equal to

simplify
-17 - (-3 - 10)=

simplify
-5(3 - 4) - (-15 + 3)=

Any help will help thanks!
hahaha very funny Kubuntu cause last time i checked I was in 9th grade with straight a's..thanks 4 ur input tho u helped me understand it better
 
This is easy, all this is testing you to do is order of operations. Remember PEMDAS, the order in which you should compute (Parenthesis, Exponents, Multiplication, Division, Addition, Subtraction), So let's look at the problems.

1. -4-3(-2-4)

Let's look at the problem, parenthesis first right so lets look inside

(-2-4)= -6 right, because minus 2 minus 4 gives a negative number (think of it this way a subtraction sign before a positive number makes that number negative, a subtraction Sign before a negative number makes it positive)

So now its -4-3(-6), See what happened you combined the numbers in the parenthesis and subbed it where the Original problem was.

According to Pemdas, we should know multiply next

-3(-6) = Positive 18, since a negative times a negative gives a positive

Finally lets subtract -4+18 which gives 14 (same thing as 18-4)


2.) The word problem is just testing how you can recognize key words to set up a numeric expression (like 3-5)

Look at the words carefully and look for key words like add, subtract, over (divide), multiplied by, of (multiply)

You have part of it:

-6+10 and like I said before over means divide so here is your problem

-6+10 divided by 2. So the answer is

4/2=2.

But wait according to Pemdas shouldn't you of divided the 10 by the 2 first? No, because the word problem suggest by saying -6+10 over 2, that the whole problem is divided by two after you do the first operation of addition.

3. Just follow the steps in problem one. Do this on your own and see if you can get it. I'll give you the answer so you can check.

-17 - (-3 - 10)=

1. (-3-10)= -13
2.) New problem: -17-(-13)
3.) -17+13 (why + because if you get a problem that has -(-2) or etc, think there is a 1 after the first negative sign so -1(-2), multiply a negative by a negative you get a positive)
4.) Answer: -4

Last problem:

-5(3-4)-(-15+3)

This is the same concept only a bit longer, it combines what you learned. Remember parentheses first, so solve inside both parenthesis and write out the new problem.

(3-4) and (-15+3) which is -1 and -12 now write out the new problem.

-5(-1)-(-12).

You see how that worked, you simplified the values in the pare thesis and subbed it where the Original problem was. Now its easy!

-5*-1=5 -(-12), remember what i told you earlier, becomes +12 so

5+12=17


There you go I hoped this helped all the best.
 
No offense - but you shouldn't need help with this. Practice more or the test will kill you.

Here, I'll show you the actual process work behind one:

-4 - 3(-2 - 4)
= -4 -3(-6)
Negative times a negative is a positive, so:
= -4 +18
= 14
 
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