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2007-06-11 03:10:42 · 5 answers · asked by Dustin v 1 in Science & Mathematics ➔ Mathematics
3y - 16 + y = 38 + 3y - 47
4y - 16 = 3y - 9
4y - 3y - 16 = 3y - 3y - 9
y - 16 = -9
y - 16 + 16 = -9 + 16
y = 7
2007-06-11 03:36:28 · answer #1 · answered by MamaMia © 7 · 0⤊ 0⤋
3y - 16 + y = 38 + 3y - 47
transpose all the variables (y's) in one side of the equation and all the constants in the other side. when transposing a value, you change its sign. (+) becomes (-), vice versa.
so, 3y + y -3y = 38 - 47 + 16
then solve:
4y - 3y = 54 - 47
y = 7
2007-06-11 10:52:03 · answer #2 · answered by regreg 3 · 0⤊ 0⤋
3y - 16 + y = 38 + 3y - 47
4y - 16 = 38 + 3y - 47
-3y l - 3y
y - 16 = 38 - 47
y - 16 = -9
+ 16 l + 16
y = 7
hope i helped! =))
2007-06-11 10:39:09 · answer #3 · answered by Anonymous · 0⤊ 0⤋
3y-3y+y=16-38+47
2y/2y=7/2
y=7/2
y=3/1/2
2007-06-11 11:09:25 · answer #4 · answered by memo. 1 · 0⤊ 0⤋
- 16 + y = - 9
y = 16 - 9
y = 7
2007-06-11 15:15:20 · answer #5 · answered by Como 7 · 0⤊ 0⤋