详细解方程 x-(1/4x+7)-[2/5(x-1/4x-7)+2]=5/18x
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详细解方程 x-(1/4x+7)-[2/5(x-1/4x-7)+2]=5/18x
详细详细详细 感激不尽感激不尽!
详细详细详细 感激不尽感激不尽!
x-(1/4x+7)-[2/5(x-1/4x-7)+2]=5/18x
x-1/4x-7-[2/5x-2/5×1/4x-2/5×7+2]=5/18x
3/4x-7-[2/5x-1/10x-14/5+2]=5/18x
3/4x-7-[3/10x-14/5+2]=5/18x
3/4x-7-[3/10x-4/5]=5/18x
3/4x-7-3/10x+4/5=5/18x
9/20x-7+4/5=5/18x
9/20x-5/18x=7-4/5
85/180x=31/5
17/38x=31/5
x=31/5÷17/38
x=31/5×38/17
x=1178/85
再问: 答案是36哦
再答: 算的乱七八糟的,真心不会算!我再算一遍吧!
x-1/4x-7-[2/5x-2/5×1/4x-2/5×7+2]=5/18x
3/4x-7-[2/5x-1/10x-14/5+2]=5/18x
3/4x-7-[3/10x-14/5+2]=5/18x
3/4x-7-[3/10x-4/5]=5/18x
3/4x-7-3/10x+4/5=5/18x
9/20x-7+4/5=5/18x
9/20x-5/18x=7-4/5
85/180x=31/5
17/38x=31/5
x=31/5÷17/38
x=31/5×38/17
x=1178/85
再问: 答案是36哦
再答: 算的乱七八糟的,真心不会算!我再算一遍吧!
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