2007-08-08 17:22:52 · 8 answers · asked by rudy t 1 in Science & Mathematics ➔ Mathematics
It depends on what the question was!
9 y + 21 is a perfectly good answer to an appropriate question, such as "What is 21 larger than 9 y?"
However, if the question is "What is the answer to
9 y + 21 = 0?", then the answer is:
y = - 21/9 = 7/3 = - 2 1/3.
Live long and prosper.
2007-08-08 17:25:55 · answer #1 · answered by Dr Spock 6 · 1⤊ 0⤋
We need more information. Do you mean that 9y + 21 = 0, in which case 9y = -21. y= -21/9 or y = - 7/3
2007-08-09 00:26:41 · answer #2 · answered by JO 3 · 0⤊ 0⤋
You forgot something. What does 9y + 21 equal? You see, you cant solve for y without knowing what the equation equals out to.
2007-08-09 00:29:37 · answer #3 · answered by Anonymous · 0⤊ 0⤋
9y + 21 is not an equation to be solved. It is only an expression and is in its simplified form. There is no answer to this expression unless there is a question stated regarding this expression.
2007-08-09 00:30:58 · answer #4 · answered by Anonymous · 0⤊ 0⤋
9y+21
9y/9+21/9
y=21/9
y=2.3
2007-08-09 00:27:27 · answer #5 · answered by rio_cage23 1 · 0⤊ 1⤋
the answer is the line y=9x+21
dont listen to these other people
2007-08-09 00:27:34 · answer #6 · answered by climberguy12 7 · 1⤊ 0⤋
=3(3y+7)
2007-08-09 00:29:02 · answer #7 · answered by iyiogrenci 6 · 1⤊ 0⤋
is it an evaluation or an equation? im confused
2007-08-09 00:30:39 · answer #8 · answered by tony 3 · 0⤊ 0⤋