+0  
 
+1
63
1
avatar+717 

- 1/2 + (3/4 * 4/9) 

 

Help its a multiple choice and i didn't ger one of them. I got - 5/6.

 

Can anyone explain what's wrong or where I take away the negative sign?

SmartMathMan  Oct 14, 2018
 #1
avatar+444 
+1

-1/2 + (3/4 * 4/9)  Here we need to start by finding the common denominator for 3/4 and 4/9.

For this problem, you can just multiply the numerators: (3*4)=12 

And the denominators: (4*9)=36

So we get the fraction 12/36.

To simplify this equation we will reduce the fraction by dividing by 4. We then get 3/9

 

Now we have -1/2 + 3/9

 

To get a common denominator we will cross multiply:

-1*9= -9

2*3=6

2*9 and 9*2 = 18 and 18 so we get:

 

-9/18+6/18

 

Now we can add the numerators and the denominator remains the same and we get the answer: -3/18

Hope this helps!

Mr.Owl  Oct 14, 2018

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