4.8-X+0.4=3.6+x
5.2-x=3.6+x
2x=5.2-3.6
2x=1.6
x=0.8
甲数是4.8,乙数是3.6,如果甲数减去x,乙数加上x,那么甲数比乙数少0.4,求x怎么运算?我很笨
甲数是4.8,乙数是3.6,如果甲数减去x,乙数加上x,那么甲数比乙数少0.4,求x怎么运算?我很笨
运算需要括号吗?为什么有时不用括号谢谢
运算需要括号吗?为什么有时不用括号谢谢
数学人气:632 ℃时间:2019-10-23 04:00:57
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