1. Please make a food list for your supper.
2. (1)Is he my brother's friend?
(2)Does she like sandwiches?
(3)Do they like vegetable?
(4)Do you like bananas?
(5)Is his last name Green?
3.(1)解:设妹妹今年x岁,哥哥今年y岁
{y-4=3(x-4) ①
{y=2x ②
把②代入①得:2x-4=3(x-4)
2x-4=3x-12
x=8
答:妹妹今年8岁。
(2)13x-15x+x=-3
解: -x=-3
x=3
(3)2.5y+10y-6y=15-21.5
解: 6.5y=-6.5
y=-1
(4)二分之一b减三分之二b+b=三分之二x6-1
解: 六分之五b=3
b=五分之十八
解:1. Please make a food list for your supper.
2. (1)Is he my brother's friend?
(2)Does she like sandwiches?
(3)Do they like vegetable?
(4)Do you like bananas?
(5)Is his last name Green?
3.(1)解:设妹妹今年x岁,哥哥今年y岁
{y-4=3(x-4) ①
{y=2x ②
把②代入①得:2x-4=3(x-4)
2x-4=3x-12
x=8
答:妹妹今年8岁。
(2)13x-15x+x=-3
解: -x=-3
x=3
(3)2.5y+10y-6y=15-21.5
解: 6.5y=-6.5
y=-1
(、二分之一b减三分之二b+b=三分之二x6-1
解: 六分之五b=3
b=五分之十八
谢谢!!
1.Please make a list of the food you want for dinner.
一般疑问句:
1.Is he your brother's friend ?
2.Does she like sandwiches ?
3.Do they like vegetable ?
4.Do you like bananas ?
5.Is his last name Green ?
数学题:
设哥哥现在的年龄为X
妹妹现在的年龄为Y
得方程组
X-4=3(Y-4)
X=2Y 解得:
X=16
Y=8妹妹现在的年龄是8岁
解方程(这个还要过程?说笑了吧!):
1.-x=-3
得x=3
2.6.5y=-6.5
得y=-1
3.1/2b-2/3b+b=2/3×6-1=3
得5/6b=3
b=3.6
1.Please make a list of the food you want for dinner.
一般疑问句:
1.Is he your brother's friend ?
2.Does she like sandwiches ?
3.Do they like vegetable ?
4.Do you like bananas ?
5.Is his last name Green ?
数学题:
设哥哥现在的年龄为X
妹妹现在的年龄为Y
得方程组
X-4=3(Y-4)
X=2Y 解得:
X=16
Y=8妹妹现在的年龄是8岁
解方程(这个还要过程?说笑了吧!):
1.-x=-3
得x=3
2.6.5y=-6.5
得y=-1
3.1/2b-2/3b+b=2/3×6-1=3
得5/6b=3
b=3.6