D(r)=(27(r)+13)/(26)

解答

D (r) = \frac{27 ( r ) + 13}{26}

r = \frac{13}{26 D - 27}; D \neq = \frac{27}{26}

求解步骤

D (r) = \frac{27 ( r ) + 13}{26}

在两边乘以

26

26 Dr = 27 r + 13

将

27 r

para o lado esquerdo

26 Dr - 27 r = 13

分解

26 Dr - 27 r : r (26 D - 27)

r (26 D - 27) = 13

两边除以

26 D - 27; D \neq = \frac{27}{26}

r = \frac{13}{26 D - 27}; D \neq = \frac{27}{26}

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