我耍長答2(x+4)=12和4(x+3)=28

2(x+4)=12
2x+8 =12
2x =12-8
2x / 2= 4 / 2
x = 2

4(x+3)=28
4x+12=28
4x =28-12
4x / 4 =16 / 4
x = 4

So easy...........................

The answer is....................................................................

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2x+8=12

2x=12-8

x=4/2

x=2

4x+12=28

4x=28-12

x=16/4

x=4

(Hope i can help u )XP

2(x+4)=12
2x+8=12
2x+8-8=12-8
2x=4
2x/2=4/2
x=2

4(x+3)=28
4x+12=28
4x+12-12=28-12
4x=16
4x/4=16/4
x=4

2(x+4)=12
2*x+2*4=12
2x+8=12
2x+8-8=12-8
2x=4
2x/2=4/2
x=2


4(x+3)=28
4*x+4*3=28
4x+12=28
4x+12-12=28-12
4x=16
4x/4=16/4
x=4

2(x+4)=12
2x+8=12
2x=12-8
2x=4
x=4/2
x=2

4(x+3)=28
4x+12=28
4x=28-12
4x=16
x=16/4
x=4

2x+8=12
2x=4
x=2
4x+12=28
4x=16
x=4

2x+8=12

2x=12-8

x=4/2

x=2

4x+12=28

4x=28-12

x=16/4

x=4

你的要字打錯了~~

2(x+4) = 12
x+4 = 6
x=2

4(x+3)=28
x+3=7
x=4

2(x+4)=12
x+4=6
x=2


4(x+3)=2
x+3=1/2
x=-2又1/2

2006-10-22 17:05:24 補充：
第二題錯左,sorry!!應該係4(x+3)=28 x+3=7x=4

2(2+4)=12和4(4+3)=28