Fernanda050
Fernanda050
21-01-2016
Mathematics
contestada
5/7(21y+7)=2/9(18x+27
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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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