5/6 = -10/3y -5/9
thanks!
algebra help ? please?
2008-09-02 6:05 am
回答 (6)
2008-09-02 6:16 am
✔ 最佳答案
5/6 = (-10/3)y - 5/9Add 5/9 to both sides:
5/6 + 5/9 = (-10/3)y
Find the LCD:
(5/6)(3/3) + (5/9)(2/2) = (-10/3)y
15/18 + 10/18 = (-10/3)y
25/18 = (-10/3)y
Multiply both sides by -3/10:
(25/18)(-3/10) = y
y = -75/180
y = -15/36
y = -5/12
Or:
5/6 = -10/(3y) - 5/9
Multiply everything by 3y:
15y/6 = -10 - 15y/9
5y/2 = -10 - 5y/3
Add 5y/3 to both sides:
5y/2 + 5y/3 = -10
Find LCD:
15y/6 + 10y/6 = -10
25y/6 = -10
Multiply both sides by 6/25:
y = -60/25
y = -12/5
2008-09-02 2:41 pm
5/6 = -10/3(y) - 5/9
18(5/6) = 18(-10y/3 - 5/9)
3(5) = 6(-10y) - 2(5)
15 = -60y - 10
60y = -15 - 10
60y = -25
y = -25/60
y = -5/12
18(5/6) = 18(-10y/3 - 5/9)
3(5) = 6(-10y) - 2(5)
15 = -60y - 10
60y = -15 - 10
60y = -25
y = -25/60
y = -5/12
2008-09-02 1:21 pm
First find common denominator
15/18 = -60/18y - 10/18
Add 10/18 to both sides to get y by itself
25/18 = -60/18y
Multiply both sides by reciprocal of -60/18 (18/60, this will cancel out fraction on y side to give you just y)
18/60*25/18 will produce 25/60by cancelling out the 18s. After simplifying the answer will be as follows.
-5/12 = y
15/18 = -60/18y - 10/18
Add 10/18 to both sides to get y by itself
25/18 = -60/18y
Multiply both sides by reciprocal of -60/18 (18/60, this will cancel out fraction on y side to give you just y)
18/60*25/18 will produce 25/60by cancelling out the 18s. After simplifying the answer will be as follows.
-5/12 = y
2008-09-02 1:19 pm
Group the unknown on one side.
5/6 + 5/9 = -10/3Y
Make them have the same denominator
(15+10)/18 = -10/3Y
25/18 = -10/3Y
Cross multiply them...
25(3) = -10Y(18)
75 = -180Y
Y = -5/12
5/6 + 5/9 = -10/3Y
Make them have the same denominator
(15+10)/18 = -10/3Y
25/18 = -10/3Y
Cross multiply them...
25(3) = -10Y(18)
75 = -180Y
Y = -5/12
2008-09-02 1:12 pm
5/6 + 5/9 = -10/3 y
15/18 + 10/18 = -10y/3
25/18 = -10y/3
75/18 = -10y
-75/180 = y
-15/36 = y
-5/12 = y
15/18 + 10/18 = -10y/3
25/18 = -10y/3
75/18 = -10y
-75/180 = y
-15/36 = y
-5/12 = y
2008-09-02 1:11 pm
x 18y
15y = -60 - 10y
25y = -60
y = -60/25
= -12/5
15y = -60 - 10y
25y = -60
y = -60/25
= -12/5
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