anonymous
  • anonymous
Susan is creating a solution. A formula for the solution calls for 7/10 mL of water. Susan wants to make 2/7 less of the solution than the formula creates. How much water should Susan use? Express your answer as a fraction in simplest form. mL
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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Agl202
  • Agl202
@Tears1213 Need help?
anonymous
  • anonymous
yes
Agl202
  • Agl202
First find the greatest common denominator of 10 x 7=?

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anonymous
  • anonymous
70
Agl202
  • Agl202
Greatest common denominator is the common number and both 7 and 10 go into in this case it would be 70 right!
Agl202
  • Agl202
So now 7/10 is the same as 49/70 since all you have to do is multiply 7 by both sides and you get 49/70. Same with 2/7 multiply both sides by 10 and you will get?
anonymous
  • anonymous
so like 2*10=20 and 10*7 =70 am i right im really bad at mah science is my thing
Agl202
  • Agl202
Yes, ur right. so, that will make it 20/70
Agl202
  • Agl202
Exactly! So now grab both of the fractions and subtract them... So \[\frac{ 49 }{ 70} -\frac{ 20 }{ 70 } =?\]
anonymous
  • anonymous
ok so 49-20= 29 70-70=0 i failed
Agl202
  • Agl202
Ur numerator is correct, But remember that the denominator has to stay the same. So, u should get: \[\frac{ 29 }{ 70 }\]
anonymous
  • anonymous
ok thxs
Agl202
  • Agl202
Anytime.

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