anonymous
  • anonymous
Solve negative two-thirds times a plus two-fifths equals three-fourths for a.
Mathematics
schrodinger
  • schrodinger
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anonymous
  • anonymous
Oh crap i screwed up my answer
anonymous
  • anonymous
Do you mean (-2/3 * a) + 2/5 = 3/4 ?
anonymous
  • anonymous
yes

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anonymous
  • anonymous
Solve negative two-thirds times a plus two-fifths equals three-fourths for a. a equals negative seven-fortieths a equals negative seven-tenths a equals negative twenty-one fortieths a equals negative twenty-one tenths
anonymous
  • anonymous
thats a b c and d
anonymous
  • anonymous
Ok first i'd minus 2/5 from both sides, this will give you -2/3 * a = 3/4 - 2/5 therefore -2/3 * a = 0.35 then divide both sides by -2/3, this leaves just a a = 0.35 / (-2/3) a = -0.525 = negative 21/40
anonymous
  • anonymous
If you don't have calculator to add or subtract fractions you times the denominator of one against the denominator and numerator of the other, do this for both, it will give you a common denominator so you can add/subtract them
texaschic101
  • texaschic101
Did you know that if you multiply everything by the common denominator, it will get rid of the fractions and make them all whole numbers
anonymous
  • anonymous
^ that's a better way to do it :P

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