find the solution by the following system substitution method?2x -7y=11;6x - 21y = 33
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The equation will have in finitely many solutions as-
(6x-21y=33)/3 => 2x-7y=11 ( which is equal to equation 1)
here- a1/a2=b1/b2=c1/c2
and when represented graphically, the lines coincide
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