208,409 views
30 votes
30 votes
2/5 (1/3x - 15/8) - 1/3(1/2 - 2/3x)

2/5 (1/3x - 15/8) - 1/3(1/2 - 2/3x)-example-1
User Anther
by
2.1k points

1 Answer

17 votes
17 votes

Your question presented was:
(2)/(5) ((1)/(3) x-(15)/(8) )-(1)/(3) ((1)/(2) -(2)/(3)x)

Okay, lets distribute this problem and break it into two parts. We will distribute 2/5 and -1/3 to the numbers in parenthesis. This is the distributive property.

Step 1.

(2)/(5) ((1)/(3) x-(15)/(8) ) when distributed is
(2)/(15) x - (30)/(40)


Please note that -1/3 can be rewritten as + -1/3. So you must distribute the negative.

Step 2.

(-1)/(5) + (2)/(9) x
So..lets put the 2 parts of the equation together


(2)/(15) x - (30)/(40) +
(-1)/(5) + (2)/(9) x can be simplified by getting the common denominator.

You can only add like terms, so those fractions with x can only be combined with x.
Step 3.
Lets reformat while we're at it

(6)/(45) x + (10)/(45) x -(30)/(40) -(8)/(40)

We got 45 because the LCM (Lowest Common Multiple) of 15 and 9 was 45. We multiplied both sides of the fraction by 3 for 2/15x and we multiplied by 5 on both parts of the fraction for 2/9x.

Now we combine.
Step 4.

(16)/(45)x-(38)/(40). We can still simplify!
Step 5.
-38/40 can be simplified by a common factor, 2! So our final answer is

(16)/(45)x-(19)/(20)

I hope this helps you, heart if it helps.

User Merin Nakarmi
by
2.9k points