By solving equations 3x + 4y = 23 and 5x...

By solving equations 3x + 4y = 23 and 5x + 12y = 39 with the help of cross multiplication method, we obtain `(x)/(a) = (y)/(b) = (1)/(c )`, then find `(a + 4b)/(5c)`.

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The correct Answer is:

`(8)/(5)`

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NAGEEN PRAKASHAN-LINEAR EQUATIONS IN TWO VARIABLES -Exercise 3c

{:(x + 8y = 19),(2x + 11y = 28):}
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{:(8x + 13y - 29 = 0),(12x - 7y - 17 = 0):}
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{:(3y + 2x = 0),(4y + 3x = 5):}
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{:((x)/(3) + (y)/(15) = 4),((x)/(3) - (y)/(12) = (19)/(4)):}
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Solve the following system of equations by method of cross-multipli...
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5/(x-1)+1/(y-2)=2 6/(x-1)-3/(y-2)=1
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x+y=a+b , a x-b y=a^2-b^2
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{:(ax - by = a^(2) + b^(2)),(x + y = 2a):}
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2(a x-b y)+(a+4b)=0 , 2(b x+a y)+(b-4a)=0
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Solve: a x+b y=c ,\ \ \ \ b x+a y=1+c
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x/a-y/b=0 , a x+b y=a^2+b^2
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{:((a^(2))/(x) - (b^(2))/(y) = 0),((a^(2)b)/(x)+(b^(2)a)/(y) = "a + b,...
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(a-b)x+ (a+b)y=a^2-2ab-b^2 , (a+b)(x+y)=a^2+b^2 find x and y
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{:(ax + by = 1),(bx + ay = ((a + b)^(2))/(a^(2) + b^(2))-1):}
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By solving equations 3x + 4y = 23 and 5x + 12y = 39 with the help of c...
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