8x+7.2=9-x
give me the step and answer
Maths
2007-05-16 2:40 am
回答 (8)
2007-05-16 2:42 am
✔ 最佳答案
8x+7.2=9-x9x+7.2=9
9x= 1.8
x=0.2
2007-05-16 3:21 am
8x + 7.2 = 9 - x
8x + x = 9 - 7.2
9x = 1.8
9x / 9 = 1.8 / 9
x = 0.2
希望幫到你
8x + x = 9 - 7.2
9x = 1.8
9x / 9 = 1.8 / 9
x = 0.2
希望幫到你
參考: myself
2007-05-16 2:50 am
8x + 7.2 = 9 - x
8x + 7.2 + x = 9 - x + x
9x + 7.2 = 9
9x + 7.2 - 7.2 = 9 - 7.2
9x / 9 = 1.8 / 9
x =0.2
8x + 7.2 + x = 9 - x + x
9x + 7.2 = 9
9x + 7.2 - 7.2 = 9 - 7.2
9x / 9 = 1.8 / 9
x =0.2
參考: ME!!!
2007-05-16 2:43 am
8x+7.2=9-x
8x+x=9-7.2
9x=1.8
x=0.2
8x+x=9-7.2
9x=1.8
x=0.2
收錄日期: 2021-04-19 20:26:01
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