(13-101/3)+22/3=

+5 votes
77 views
asked Dec 10, 2015 in Math by anonymous
reshown Dec 10, 2015 by kidzsearch


2 Answers

0 votes
13 - 101/3 + 22/3 = ?

I would first clear the fractions by multiplying both sides by 3/3, which is the same as 1, so you are not changing anything.

13x3/3 - 3x101 /3x3 + 22x3/3x3

39/3 - 303/9 + 66/9

you can combing the right two fractions

39/3 - 237/9

you can multiply 39/3 by 3/3 to make them have the same denominator

3/3*39/3 - 237/9

117/9 - 237/9 = -120/9

Simply top and bottom by dividing by 3

-40/3
answered Dec 10, 2015 by zippy (21,040 points)
oh i thought they were division signs

#thought
0 votes

PEMDAS  

FIRST STEP: parenthesis

13/1-101/3  

13      -      101     = –195

––              ––

1                  3 = —2   

-195/2+22/3= 217/5.

217 div. by 5= 43.4 

last decimal is the answer :)

answered Dec 12, 2015 by rae (82,600 points)

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