(x-78)+111=170

解答

(x - 78) + 111 = 170

x = 137

求解步骤

(x - 78) + 111 = 170

去除括号:

(a) = a

x - 78 + 111 = 170

数字相加/相减:

- 78 + 111 = 33

x + 33 = 170

将

33

到右边

x = 137

so l v e f or y, 4 x 2 y = 8

so l v e f or c, c h 4 + o 2 = co 2 + h 2 o

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

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

x - \frac{x}{18} = - \frac{34}{9}