Question

若式子（x-1)/4的值比式子（2-x)的值少5,那么x=（ ）

Answer 1

(x - 1)/4 = (2 - x) - 5

两边同时乘以4得：

x - 1 = 4(2 - x) - 20

x - 1 = 8 - 4x - 20

x + 4x = 8 - 20 + 1

5x = -11

x = -11÷5

x = -2.2