solvefor x,4y-5x=-8

解答

求解

x, 4 y - 5 x = - 8

x = - \frac{- 8 - 4 y}{5}

求解步骤

4 y - 5 x = - 8

将

4 y

到右边

- 5 x = - 8 - 4 y

两边除以

- 5

x = - \frac{- 8 - 4 y}{5}

(3 x - 2) 2 + 2 x = 7 - 4 x

- \frac{2}{5} (8 x + 5) + \frac{3}{4} (5 - 5 x) = 6 (3 - 5 x) - 6 x

so l v e f or d, d - e - 4 f = - 4

so l v e f or a, \frac{20 a}{b} - 16 = 12

so l v e f or x, - 5 x + 2 y = 0