EffyRay EffyRay
  • 29-04-2018
  • Mathematics
contestada

1/4(r-5/2)=1/8 i need an answer cant figure it out

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Аноним Аноним
  • 29-04-2018
1/4(r - 5/2) = 1/8
Divide both sides by 1/8 :0
2(r - 5/2) = 1
r - 5/2 = 1/2
r = 1/2 + 5/2 = 6/2

r = 3 Answer
Answer Link
mathstudent55
mathstudent55 mathstudent55
  • 29-04-2018
[tex] \dfrac{1}{4}(r - \dfrac{5}{2}) = \dfrac{1}{8} [/tex]

The LCD of both fractions is 8, so multiply both sides by 8.

[tex] 8 \times \dfrac{1}{4}(r - \dfrac{5}{2}) = 8 \times \dfrac{1}{8} [/tex]

[tex] 2(r - \dfrac{5}{2}) = 1 [/tex]

Distribute the 2 on the left side.

[tex] 2r - 5 = 1 [/tex]

[tex] 2r = 6 [/tex]

[tex] r = 3 [/tex]
Answer Link

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