SOLUTION: please help! solve my rational equation 4/5 + 7/8 = s/20 the solution is s= ??

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Question 759117: please help! solve my rational equation
4/5 + 7/8 = s/20

the solution is s= ??
Found 2 solutions by jim_thompson5910, MathTherapy:
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
4/5 + 7/8 = s/20

32/40 + 7/8 = s/20

32/40 + 35/40 = s/20

(32 + 35)/40 = s/20

67/40 = s/20

67*20 = 40s

1340 = 40s

1340/40 = s

s = 1340/40

s = 67/2 <--- Answer as a fraction

s = 33.5 <--- Answer as a decimal

Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!

please help! solve my rational equation
4/5 + 7/8 = s/20

4%2F5+%2B+7%2F8+=+s%2F20

32 + 35 = 2s ------ Multiplying by LCD, 40

67 = 2s

s = 67%2F2, or highlight_green%2833.5%29

You can do the check!!

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