解不等式4x-1(25-x)≥854x-1(25-x)≥854x-1×(25-x)≥85

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解不等式4x-1(25-x)≥854x-1(25-x)≥854x-1×(25-x)≥85
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解不等式4x-1(25-x)≥854x-1(25-x)≥854x-1×(25-x)≥85
解不等式4x-1(25-x)≥85
4x-1(25-x)≥85
4x-1×(25-x)≥85

解不等式4x-1(25-x)≥854x-1(25-x)≥854x-1×(25-x)≥85
4X-25+X≥85
5X≥85+25
X≥22