5(a-1)=3a=7
-3(p+2)=p-18
4(x=2)=5x
列式,一步不能少,help~help!!!
方程式!!!
2007-10-04 4:26 am
回答 (3)
2007-10-04 4:36 am
✔ 最佳答案
5(a-1)=3a+75a-5=3a+7
5a-3a=7+5
2a=12
a=6
-3(p+2)=p-18
-3p-6=p-18
p+3p=-6+18
4p=12
p=3
4(x+2)=5x
4x+8=5x
5x-4x=8
x=8
2007-10-03 20:36:49 補充：
5(a-1)=3a+7 5a-5=3a+75a-3a=7+5 2a=12 a=6-3(p+2)=p-18 -3p-6=p-18 p+3p=-6+18 4p=12 p=34(x+2)=5x 4x+8=5x 5x-4x=8 x=8
參考: ME
2007-10-04 5:05 am
1)不明白,你應該打錯第一題,我估計如下,
5(a-1)=3a+7
5a-5=3a+7
2a=12
a=6
2)-3(p+2)=p-18
-3p-6=p-18
-2p=12
-p=6
p=-6
3)4(x=2)=5x
4x=8=5x
x=8
5(a-1)=3a+7
5a-5=3a+7
2a=12
a=6
2)-3(p+2)=p-18
-3p-6=p-18
-2p=12
-p=6
p=-6
3)4(x=2)=5x
4x=8=5x
x=8
2007-10-04 4:38 am
你係唔係打錯左題目呀？？
收錄日期: 2021-04-13 19:13:33
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