solvefor u,a=u-(n-1)*r

解答

求解

u, a = u - (n - 1) \cdot r

u = a + (n - 1) r

求解步骤

a = u - (n - 1) r

交换两边

u - (n - 1) r = a

将

(n - 1) \cdot r

到右边

u = a + (n - 1) r

x (18) + y (5) = 577

so l v e f or a, 39 = 6 (a) + b (15)

so l v e f or x, 7 x - 3 y + 5 = 0

5 x - 12 = 58

2 x + 50.32 x - 9 = 3072