can someone help me solve for y in this simple equation?

2008-08-17 7:24 pm
2/7 - 1/5 = y/3

回答 (3)

2008-08-17 7:29 pm
✔ 最佳答案
2/7 - 1/5 = y/3
y = 3(2/7 - 1/5)
y = 6/7 - 3/5
y = (6/7)(5/5) - (3/5)(7/7)
y = 30/35 - 21/35
y = 9/35
2008-08-18 2:30 am
10-7/35=y/3,9=35y, y=9/35
2008-08-18 2:28 am
9/35=y

Work:
2/7 -1/5 =y/3 find a common denominator
10/35-7/35=y/3
3/35=y/3 then multiply 3 to both sides to get rid of the 3 under the y
9/35=y


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