要 steps
(1.) y/3 +y = 4
(2. )2- y/4=y/2
(3.) 1- y/2=3y/4
(4.) (5x+9)/2=4x
(5 ) ( 6x-1) /4 = x-1/3
math HELP!!
2008-10-18 2:12 am
回答 (3)
2008-10-18 2:43 am
✔ 最佳答案
(1) y/3+3y/3=4 , 4y/3=4, y=4*3/4, y=3(2) 8/4-y/4=2y/4, 8-y=2y, 3y=8, y=8/3
(3) 4-2y=3y, 5y=4, y=4/5
(4) 5x+9=8x, 3x=9, x=3
(5) 3(6x-1)=12x-4, 18x-3=12x-4, 6x=-1, x=-1/6
參考: me
2008-10-18 6:43 am
1.)
y/3+y=4
y/3+3y/3=4
(y+3y)/3=4
4y=12
y=3
2.)
2- y/4=y/2
4( 2- y/4)= 4(y/2) 8-y=2y
3y=8
y=8/3
3.)
1-y/2=3y/4
4(1-y/2)=4(3y/4)
4-2y=3y
4=5y
y=4/5
4.)
(5x+9)/2=4x
(5x+9)=8x
9=3x
x=3
5.)
( 6x-1) /4 = x-1/3
6x-1 = 4(x-1/3)
2x = 1-4/3
2x = -1/3
x = - 1/6
y/3+y=4
y/3+3y/3=4
(y+3y)/3=4
4y=12
y=3
2.)
2- y/4=y/2
4( 2- y/4)= 4(y/2) 8-y=2y
3y=8
y=8/3
3.)
1-y/2=3y/4
4(1-y/2)=4(3y/4)
4-2y=3y
4=5y
y=4/5
4.)
(5x+9)/2=4x
(5x+9)=8x
9=3x
x=3
5.)
( 6x-1) /4 = x-1/3
6x-1 = 4(x-1/3)
2x = 1-4/3
2x = -1/3
x = - 1/6
參考: my maths knowledge
2008-10-18 2:47 am
1.) y/3+y=4
y/3+3y/3=4
(y+3y)/3=4
4y=12
y=3
2.) 2- y/4=y/2
4( 2- y/4)= 4(y/2) 整條式乘以4
8-y=2y
3y=8
y=8/3
3.) 1-y/2=3y/4
4(1-y/2)=4(3y/4)
4-2y=3y
4=5y
y=4/5
4.) (5x+9)/2=4x
(5x+9)=8x
9=3x
x=3
5.) ( 6x-1) /4 = x-1/3
6x-1 = 4(x-1/3)
2x = 1-4/3
2x = -1/3
x = - 1/6
y/3+3y/3=4
(y+3y)/3=4
4y=12
y=3
2.) 2- y/4=y/2
4( 2- y/4)= 4(y/2) 整條式乘以4
8-y=2y
3y=8
y=8/3
3.) 1-y/2=3y/4
4(1-y/2)=4(3y/4)
4-2y=3y
4=5y
y=4/5
4.) (5x+9)/2=4x
(5x+9)=8x
9=3x
x=3
5.) ( 6x-1) /4 = x-1/3
6x-1 = 4(x-1/3)
2x = 1-4/3
2x = -1/3
x = - 1/6
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