x-(x+1200)/7等于30 怎么解
问题描述:
x-(x+1200)/7等于30 怎么解
答
x-(x+1200)/7=30两边同乘7
7x-(x+1200)=210,6x-1200=210,6x=1410
x=235
答
x-(x+1200)/7=30
7x-x-1200=210
6x=1410
x=235
答
x-(x+1200)/7=30
7x-(x+1200)=210
6x=1410
x=235