x-[(x-3500)*0.2-555]=9553求x=?
问题描述:
x-[(x-3500)*0.2-555]=9553求x=?
答
x-[(x-3500)*0.2-555]=9553
x-[0.2x-700-555]=9553
0.8x+1255=9553
0.8x=8298
x=10372.5