甲,乙,丙三数之和是183,乙比丙的2倍少4,甲比丙的3倍多7,求甲乙丙三数是多少
不能设X
人气：483 ℃ 时间：2019-08-21 07:18:59
解答
设并使X,则乙2X-4,甲3X+7,三者相加
6X+3=183
x=30
甲97,乙56,丙30
如果不用方程的话你可以反着想,
就是,如果甲比原来少7个就正好是丙的3倍,如果乙多4个,就正好是丙的2倍所以(183-7+4)/(1+2+3)=30
丙是30,再算甲乙
推荐
- 甲乙丙三数之和是183,甲数比乙数的2倍多7,丙数比乙数的3倍少4,求甲乙丙三数各是多少
- 甲乙丙3数之和是183.甲数比乙数的2倍多7,丙数比乙数的3倍少4,求3数各是多少?
- 甲、乙、丙三数之和是183,乙比丙的2倍少4,甲比丙的3倍多7.甲．乙．丙三数各是多少?
- 甲,乙,丙,丁三数之和是242,乙比丙的2倍少5,甲比丙的3倍多7.甲乙丙三数个是多少?
- 甲乙丙三数之和是,183乙比丙的2倍少4甲比丙的三倍多七.你,求甲乙丙,3个数各是多少?
- I did what everyone does who has no idea what to do with themselves when they got out of college and went on to graduate
- Tom has over ten books.(改同义句） Tom has ____ ____ ten books.
- 成语‘狡兔三窟’的来历,请告诉.
猜你喜欢
