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RedPrince
Group Title
2x+y3=0
x+2y+3=0
is these equations are solve like this:
 2 years ago
 2 years ago
RedPrince Group Title
2x+y3=0 x+2y+3=0 is these equations are solve like this:
 2 years ago
 2 years ago

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waterineyes Group TitleBest ResponseYou've already chosen the best response.3
Multiply first equation by 2 4x + 2y  6 = 0 x + 2y + 3 = 0 Subtract them: 3x = 9 x = 3 Put the value of x in any of the above equation and find the value of y.. Can you do it or not??
 2 years ago

RedPrince Group TitleBest ResponseYou've already chosen the best response.0
@waterineyes I want to solve it simultaneously: look \[x/(1)(3) + (2)(3) = y/(3)(2) + (1)(3) = 1/(2)(2) +(1)(1)\]
 2 years ago

KRAZZy Group TitleBest ResponseYou've already chosen the best response.0
yes waterineyes do it perfecly
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.3
@KRAZZy What???
 2 years ago

RedPrince Group TitleBest ResponseYou've already chosen the best response.0
@KRAZZy I know and I also solve it! But I forgot that how to solve equations simultaneously!
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.3
I studied this method but now forgot how to solve by this method but I will try wait for sometime...
 2 years ago

RedPrince Group TitleBest ResponseYou've already chosen the best response.0
@waterineyes O.k., I am waiting for your reply!!!
 2 years ago

KRAZZy Group TitleBest ResponseYou've already chosen the best response.0
can any1 tell me wht is simultaneous methd:P
 2 years ago

zepp Group TitleBest ResponseYou've already chosen the best response.0
Are you referring to the reduction method?
 2 years ago

zepp Group TitleBest ResponseYou've already chosen the best response.0
If so (x+2y+3=0)*2 = 2x+4y+6=0
 2 years ago

zepp Group TitleBest ResponseYou've already chosen the best response.0
dw:1340608303151:dw
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.3
Simultaneous Method says that: If two equations are like this: \[a_1x + b_1y + c_1 = 0\] \[a_2x + b_2y + c_2 = 0\] Then the method of Solving these equations by Cross Multiplication is: \[x/(b_1c_2  b_2c_1) = y/((c_1a_2  c_2a_1) = 1/(a_1b_2  a_2b_1)\] Put in this the all the values and solve to get the values of x and y...
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.3
So, according to our question: \[a_1 = 2, b_1 = 1, c_1 = 3, a_2 = 1, b_2 = 2, c_2 = 3\] Put these values in formula given above: \[x/(3 + 6) = y/(3 6) = 1/(41)\] \[x/9 = y/(9) = 1/3\] Equating one by one: x/9 = 1/3 x = 3 And y/(9) = 1/3 y = 3 So, (x, y) is (3, 3).....
 2 years ago

RedPrince Group TitleBest ResponseYou've already chosen the best response.0
@waterineyes @zepp @KRAZZy O.k., I get it! now I understand what is wrong! I am just putting + singn agter multiplying but there is ive sign!!! thanks to all!!!!!
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.3
Welcome dear..
 2 years ago
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