solvefor x,4x-7y=19

解答

求解

x, 4 x - 7 y = 19

x = \frac{19 + 7 y}{4}

求解步骤

4 x - 7 y = 19

将

7 y

到右边

4 x = 19 + 7 y

两边除以

4

x = \frac{19 + 7 y}{4}

\frac{9}{4} x + 1 = \frac{11}{2}

so l v e f or x, 4 x - 5 y = 3

19 + \frac{1}{6} x = 20

4.74 - 30 c = - 43 - 82 c - 4.26

G (S) = \frac{1}{S ( S ^{2} + 4 )} e^{- S}