Answers

2016-04-30T23:10:54+05:30
3x+4y-12=0 and 7x+2y-17=0 are given eqns

Solving by x,y,1 cross multiplying method

in eqn 1 ---- x=3, y=4, c=-12
in eqn 2 ---- x=7, y=2, c=-17
     
                          x       y    1               
                       4    -12    3     4
                          X      X    X
                       2    -17    7     2
x/[(-17x4)-(-12x2)] = y/[(-12x7)-(-17x3)] = 1/[(3x2)-(7x4)]              
x/-68+24 = y/-84+51 = 1/6-28
x/-44 = y/-33 = 1/-22
x=-44/-22, y=-33/-22
x=4/2, y=3/2
therefore x=2, y=3/2


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the answer you posted me is right or not.if you are sure so please contact with me
yes its 100% correct deariee... For proof just place 2,3/2 in the given equations, then you will get 12,17 as same as in the question.. So its 200% correct :P