144=12z

解答

144 = 12 z

z = 12

求解步骤

144 = 12 z

交换两边

12 z = 144

两边除以

12

z = 12

\frac{4}{3} x - 13 = x - 9

- 2 x = 3 x - 1

\frac{7 x + 3}{2} - \frac{9 x - 8}{4} = 6

3 x - 11 + 2 x = 29

so l v e f or y, 4 x + 5 y = 12