解方程 x-3%x=4.9 (1+25%)x=56 4分之3x-25%=2 60+20%x=100

问题描述:

解方程 x-3%x=4.9 (1+25%)x=56 4分之3x-25%=2 60+20%x=100

x-3%x=4.9 0.97x=4.9x=4.9/0.97x=490/97(1+25%)x=56x=56÷1.25x=44.84分之3x-25%=20.75x=2+0.250.75x=2.25x=2.25÷0.75x=360+20%x=1000.2x=100-600.2x=40x=40÷0.2x=200