(0.5X+200)/14=0.05X 这题咋算?
问题描述:
(0.5X+200)/14=0.05X 这题咋算?
答
(0.5X+200)/14=0.05X
两边同时乘以140
得10(0.5x+200)=7x
5x+2000=7x
7x-5x=2000
2x=2000
x=1000
答
0.5x+200=0.05x乘以14
0.5x+200=0.7x
0.2x=200
x=1000
答
(0.5X+200)/14=0.05X
0.5X+200=0.05x*14
0.5X+200=0.7x
0.7x-0.5x=200
0.2x=200
x=1000
答
0.5x+200=0.7x
200=0.2x
x=1000