1.3/4+x=9/10 2.x+3/7=3/5 3.x-2/5=3/4 4.5/6-x=5/12解方程

问题描述:

1.3/4+x=9/10 2.x+3/7=3/5 3.x-2/5=3/4 4.5/6-x=5/12解方程

解1:3/4+x=9/10 解2:x+3/7=3/5 解3:x-2/5=3/4 x=9/10-3/4 x=3/5-3/7 x=3/4+2/5 x=-3/10 x=6/35 x=1又3/20 解4:5/6-x=5/12 x=5/6-5/12 x=5/12