(X×0.8-1000)÷1000=10%怎么算?

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(X×0.8-1000)÷1000=10%怎么算?(X×0.8-1000)÷1000=10%怎么算?(X×0.8-1000)÷1000=10%怎么算?(X×0.8-1000)÷1000=10%1000

(X×0.8-1000)÷1000=10%怎么算?
(X×0.8-1000)÷1000=10%怎么算?

(X×0.8-1000)÷1000=10%怎么算?
(X×0.8-1000)÷1000=10%
1000×(X×0.8-1000)÷1000=1000×10%
X×0.8-1000=100
X×0.8-1000+1000=100+1000
X×0.8=1100
X×0.8÷0.8=1100÷0.8
X=1100÷0.8
X=1375