(x-300-400)×(1-0.25)÷800=(x-300)×(1-0.25)÷1000

2025-03-03 08:11:37
推荐回答(2个)
回答1:

(x-300-400)÷800=(x-300)÷1000,
(x-300-400)÷4=(x-300)÷5,
(x-700)÷4=(x-300)÷5,
(x-700)×5=(x-300)×4,
5x-3500=4x-1200,
x=2300

回答2: