Fernanda050
Fernanda050 Fernanda050
  • 21-01-2016
  • Mathematics
contestada

5/7(21y+7)=2/9(18x+27

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Panoyin
Panoyin Panoyin
  • 21-01-2016
     ⁵/₇(21y + 7) = ²/₉(18x + 27)
⁵/₇(21y) + ⁵/₇(7) = ²/₉(18x) + ²/₉(27)
           15y + 5 = 4x + 6
                  - 5          - 5
                 15y = 4x + 1
                  15        15
                     y = ⁴/₁₅x + ¹/₁₅
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