anonymous
  • anonymous
Write an expression that best represents the context of the word problem. Solve for the unknown values. If Sarah is 24 years younger than her mother and if the sum of their ages is 68, how old is Sarah?
Pre-Algebra
katieb
  • katieb
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RadEn
  • RadEn
the expression algbera of this, is s = m + 24 and s + m = 68 with s = sarah's old, m=mother
anonymous
  • anonymous
So, the answer would be?
RadEn
  • RadEn
sorry, the first should s=m-24 then to get s, do subtituting or elimination method from s=m-24 ---> m=s+24 substitute m=s+24 to s+m=68, so s+m=68 s + s+24=68 2s + 24 = 68 2s = 68-24 2s = 44 s = 44/2 = 22

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