(3/5 x+40):(x+50)=2:3解方程
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(3/5 x+40):(x+50)=2:3解方程
(3/5 x+40):(x+50)=2:3
解方程
(3/5 x+40):(x+50)=2:3解方程
原式可化简为3×(3/5 x+40)=2×(x+50)且x≠-50,
即0.2x=20,x=100 ,满足x≠-50,即解是x=100.
。。。
求解未知数,原式可化为:(3/5 x+40)*3=(x+50)*2
然后去括号 9/5x+120=2x+100
得到 1/5x=20
最后 x=100
x+2x+3x+4x+5x+6x+7x+8x+9x=9x-8x-7x-6x-5x-4x-3x-2x-x.x等于多少?
*-----------------------------------------------*| 6 4 X | 8 X X | X X 5 || X X X | X X X | X 7 8 || X X X | X X X | X X X ||---------------+---------------+--------------- || X X X | X X X | 5 1 X || X X X | X 6 X | X X X || 8 X X | 3 5 X | 2 X X ||
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