Mmk I just need sort of a reminder of the steps.
Heres the problem:
9y+4=2y+25
I know to subtract 4 from four and 25 and that leaves me with:
9y=2y+21
Do I divide 2y bye 9y?
2007-09-06 10:11:20 · 4 answers · asked by dothemooshoo247 3 in Science & Mathematics ➔ Mathematics
nope, you subtract 2y on both sides. That gives you:
7y=21
Then you divide by 7 on both sides to get your answer.
2007-09-06 10:20:19 · answer #1 · answered by whiteflame55 6 · 0⤊ 0⤋
9y + 4 = 2y + 25
Transpose 2y
9y + 4 - 2y = 2y + 25 - 2y
Collect like terms
7y + 4 = 25
Transpose 4
7y + 4 - 4 = 25 - 4
Collect like terms
7y = 21
Divide both sides of the equation by 7
7y / 7 = 21 / 7
y = 21/7
y = 3
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2007-09-06 17:20:32 · answer #2 · answered by SAMUEL D 7 · 0⤊ 0⤋
Here is how I would do it:
9y+4=2y+25
9y+4-2y=2y+25-2y
7y+4=25
7y+4-4= 25-4
7y=21
7y/7=21/7
y=3
2007-09-06 17:21:06 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Subtract 2y form both sides
7y = 21, now divide by 3 and y=7
The object is to get the y's on one side and the numbers on the other.
2007-09-06 17:20:26 · answer #4 · answered by mom 7 · 0⤊ 0⤋