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#1 2008-04-22 08:14:55
- Joseph
- Guest
6th grade math
Simplify: 2/3(6R + S) + 1/4(8R + 15S)
#2 2008-04-22 08:30:41
- Daniel123
- Member
- Registered: 2007-05-23
- Posts: 663
Re: 6th grade math
Multiply out the brackets, leaving the expressions as fractions where appropriate. Then collect like terms.
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#3 2008-04-22 10:03:28
- John E. Franklin
- Member
- Registered: 2005-08-29
- Posts: 3,588
Re: 6th grade math
2/3(6R + S) + 1/4(8R + 15S)
(2/3)6r + s(2/3) + (1/4)8r + 15s(1/4)
2r6/3 + 2s/3 + 8r1/4 + 15s1/4
12r/3 + 2s/3 + 8r/4 + 15s/4
4r + 2s/3 + 2r + 15s/4
6r + 2s/3 + 15s/4
6r + 2s4/12 + 15s3/12
6r + 8s/12 + 45s/12
6R + 53S/12
6R + (53/12)S
igloo myrtilles fourmis
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