(0.5x-3)/0.04-x=[0.4(0.5x-3)]/0.5
等式两边同时乘以0.02,得
0.5(0.5x-3)-0.02x=0.04[0.4(0.5x-3)]
0.25x-1.5-0.02x=0.008x-0.048
0.222x=1.452
x=242/37
(0.5x-3)/0.04-x=[0.4(0.5x-3)]/0.5
等式两边同时乘以0.02,得
0.5(0.5x-3)-0.02x=0.04[0.4(0.5x-3)]
0.25x-1.5-0.02x=0.008x-0.048
0.222x=1.452
x=242/37