1/2 + 2/3 x 1/3
1/9 + 3/8 (divided by) 9/4
9/14 - 1/2 x 1/2
13/16 - 25/18 (divided by) 10/3
2007-10-21 12:08:22 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
[06]
1/2 +2/3 x1/3
=1/2 +2/9
=9/18 +4/18
=13/18
2) 1/9 +3/8 divided by 9/4
=1/9 +3/8 x 4/9
=1/9 +1/6
=2/18 +3/18
=5/18
3)9/14 -1/2 x1/2
=9/14 -1/4
=18/28 -7/28
=11/28
4)13/16 -25/18 divided by10/3
=13/16 -25/18 x 3/10
=13/16 -5/12
=39/48 -20/48
=19/48
2007-10-21 12:17:43 · answer #1 · answered by alpha 7 · 0⤊ 1⤋
1/2 +2/3x 1/3=1/2+2/9= 9/18+4/18=13/18
1/9+3/8 / 9/4= 1/9 +3/8 x 4/9= 1/9+ 1/6=2/18+3/18=5/18
9/14-1/2x1/2= 9/14-1/4=18/28-7/28=11/28
13/16-25/18 / 10/3=13/16- 25/18 x 3/10=13/16-5/12=
52/48-20/48=32/48= 2/3
2007-10-21 19:18:48 · answer #2 · answered by Dave aka Spider Monkey 7 · 0⤊ 1⤋
1/2+2/3+1/3, think of two numbers that can be easily added:1/3 and 2/3. these add to be 1. so the expression is 1+1/2=1 and 1/2.
3/8 divided by 9/4 is the same as 3/8X4/9=(after crossing) 1/2X1/3=1/6. 9/14-1/6=(after finding the lcm) 27/42-7/42=20/42=10/21
try the last one by urself.
2007-10-21 19:19:23 · answer #3 · answered by Harris 6 · 0⤊ 1⤋
well first do the problem then if your having trouble simplifying take the smallest number and if nothing goes into it your done for example if its... 100
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200 just say hmmm what goes into 100? your probably automaticly say 2 so you just go 100/2 = 50 and then do the same to 200 so you get 50
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100
then do it again until you get here 25 now divide by 5
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50
5
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10 then you think its 1/2 and walaw here is your answer 1
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2
2007-10-21 19:16:06 · answer #4 · answered by VLR 3 · 0⤊ 1⤋
Multiply all the equations to find a common denominator.
1/2 + 2/3 x 1/3
Multiply them all by 6, so you can get rid of the fractions and the problem becomes way easier. ;)
2007-10-21 19:17:36 · answer #5 · answered by Peterbattahoggabatta 5 · 0⤊ 1⤋
13/18
2/9
11/28
5/12
you didn't ask for how to do it... so i just simiplied them.
2007-10-21 19:20:14 · answer #6 · answered by dBug 2 · 0⤊ 0⤋