4(3x-5)-3(7x-2)=-32

解答

4 (3 x - 5) - 3 (7 x - 2) = - 32

x = 2

求解步骤

4 (3 x - 5) - 3 (7 x - 2) = - 32

展开

4 (3 x - 5) - 3 (7 x - 2) : - 9 x - 14

- 9 x - 14 = - 32

将

14

到右边

- 9 x = - 18

两边除以

- 9

x = 2

\frac{4 x - 25}{32} = \frac{x + 8}{52}

\frac{h}{- 7.5} = - 4

5 x - 8 = 32

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

x - 3 - 2 (6 - 2 x) = 2 (2 x - 5)