x/4+5.6=0.75x

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x/4+5.6=0.75xx/4+5.6=0.75xx/4+5.6=0.75x先两边都乘四,得x+22.4=3x再移项,得x-3x=-22.4得,-2x=-22.4除以二,得x=11.2

x/4+5.6=0.75x
x/4+5.6=0.75x

x/4+5.6=0.75x
先两边都乘四,得x+22.4=3x
再移项,得x-3x=-22.4
得,-2x=-22.4
除以二,得x=11.2