4x+3[x-2(2x-1)]=4-3x

解答

4 x + 3 [x - 2 (2 x - 1)] = 4 - 3 x

x = 1

求解步骤

4 x + 3 [x - 2 (2 x - 1)] = 4 - 3 x

展开

4 x + 3 (x - 2 (2 x - 1)) : - 5 x + 6

- 5 x + 6 = 4 - 3 x

将

6

到右边

- 5 x = - 3 x - 2

将

3 x

para o lado esquerdo

- 2 x = - 2

两边除以

- 2

x = 1

\frac{8}{9} (\frac{1}{2} v - 18) + 2 v = \frac{2}{3} v

so l v e f or x, 2 x - 9 y = 18

7 - x = 3

4 (x - 9) - \frac{1}{2} (x - 9) = 21

so l v e f or a, y = a e^{x} + b e^{3 x}