2007-08-31 09:52:05 · 11 answers · asked by DeGener8 1 in Science & Mathematics ➔ Mathematics
Q + 2P = 30
2P = 30 - Q
P = 15 - (Q / 2)
2007-09-04 05:55:48 · answer #1 · answered by Como 7 · 0⤊ 0⤋
ok you have the equation Q= 30 - 2P and we are solving for P.
Step1: subtract 30 from both sides of the equation.
Q = 30 - 2P
-30 -30
= Q - 30 = -2P
Step2: divide both sides of the equation by the coefficient of P, which is -2 respectfully.
Q/-2 - 30/-2 = -2P/-2
- notice that -2P/-2 cancels out leaving us with P, we're getting close YAY :-)
so now that we've divided our whole equation be -2 it should look like this:
Q - 30 /-2 = P
Step3: Execute (simplify) the equation
Q/ -2 -30/ -2 = P
-notice that you cannot simplify Q/ -2 any further, therefore you have to leave it as is
- remember this rule when you get to the (-30/ -2) part
whenever both your numerator, in this case -30 and denominator in this case -2 are negative you will *always* yeild a positive quotient in this case 15 because -30/ -2 is POSITIVE 15.
Step4: present your answer
the answer to this question is: P = -Q/2 + 15
- note that we put the negative in the numerator where Q is to avoid a negative denominator.
GOOD LUCK! and I sincerely hope that I've explained everything to your understanding (if you should ever need another equation solved in the future here's my email: raizjean@yahoo.com
2007-08-31 10:42:33 · answer #2 · answered by Deuce_ Deuce 1 · 0⤊ 0⤋
a) To isolate -P, subtract 30 from the two facets. Q - 30 = -P Divide the equation by utilising -a million to precise the equation in terms of P, not -P. 30 - Q = P b) Q = 30 - P I merely did that one (see above.) c) 6Q = 8 - 2P Subtract 8 from the two facets, isolating -2P. 6Q - 8 = -2P Divide the equation by utilising -2 to isolate P. 4 - 3Q = P
2016-11-13 21:02:49 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Easiest way:
Q = 30 - 2P
Add 2P
Q + 2P = 30 (- 2P + 2P)
Q + 2P = 30
Subtract Q
2P = 30 - Q
Divide by 2
P = 15 - (Q/2)
2007-08-31 10:03:38 · answer #4 · answered by saberhilt 4 · 0⤊ 0⤋
P = (30 - Q)/2
2007-08-31 09:58:33 · answer #5 · answered by Anonymous · 0⤊ 1⤋
Q = 30 - 2P
==> subtract 30 from both sides
Q - 30 = -2P
==> divide by -2 on both sides
(Q - 30) / -2 = P
==> simplify both terms on left
-Q/2 + 15 = P
So, your final answer is: P = 15 - Q/2.
____________________________
2007-08-31 09:57:48 · answer #6 · answered by C-Wryte 4 · 0⤊ 2⤋
Q = 30 - 2P
Q -30 = - 2P
- (Q -30)/2 = P
or
P = (30 - Q)/2
or
P = 15 - (Q/2)
2007-08-31 09:58:32 · answer #7 · answered by petep73 3 · 0⤊ 2⤋
q=30-2p
q-30=-2p
(q-30)/-2=p or (30-q)/2=p
2007-08-31 09:58:53 · answer #8 · answered by bob k 3 · 0⤊ 1⤋
Q
__ +15 = P
-2
2007-08-31 14:25:35 · answer #9 · answered by mrsluke6t6 2 · 0⤊ 0⤋
What does the colon mean??? I have never seen that in math
2007-08-31 09:58:15 · answer #10 · answered by Mike M 4 · 0⤊ 2⤋