Question

15分之4X+5分之2X=60 解方程？

Answer 1

4x/15 +2x/5=60
同时乘以15得
4x+6x=60*15
10x=900
x=90,2,通分加一下就出来了
10/15 x = 60
x = 90,2,两边都乘以60,16X+24X=3600，所以X=90,2,(4/15)X+(2/5)X=60
(4/15+2/5)X=60
(4/15+6/15)X=60
(10/15)X=60
(2/3)X=60
X=60*3/2
X=90,2,X=90,2,4X/15+6X/15=60
10X/15=60
2X/3=60
X=90,1,4/15X+2/5X=60
4/15X+6/15X=60
10/15X=60
X=90,1,(4/15)x+(2/5)x=60 (2边乘以15)
4x+6x=900
10x=900
x=90,0,2/5=6/15可得(10/15)*x=60,即x=60*(15/10)=90,0,15分之4X+5分之2X=60 解方程
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