2x/0.03+0.25-0.1x/0.02=12.5的解,
问题描述:
2x/0.03+0.25-0.1x/0.02=12.5的解,
答
2x/0.03+1/4-0.1x/0.02=25/2
(200/3) x-5x =25/2-1/4
(185/3) x =49/4
x = (49/4) ÷ (185/3)
x = 147/740
答
2x/0.03+0.25-0.1x/0.02=12.5
200x/3+0.25-10x/2=12.5
200x/3-5x=12.5-0.25
185x/3=12.25
x=147/740