2、使算式7/8*(X-3/7)/0.625+0.2=1 X=(
问题描述:
2、使算式7/8*(X-3/7)/0.625+0.2=1 X=(
答
7/8*(X-3/7)/0.625+0.2=1
7/8*(X-3/7)/0.625=0.8
X-3/7=0.8*0.625*8/7
X-3/7=4/7
X=1