Question 106833
{{{8x-4y=16}}}
{{{y=2x-4}}}

Substituting {{{y=2x-4}}} to {{{8x-4y=16}}},

{{{8x-4(2x-4)=16}}}
{{{8x-(8x-16)=16}}}
{{{(8x-8x)+16=16}}}
{{{(8x-8x)+16=16}}}
{{{0+16=16}}}
{{{16=16}}} ------------------TRUE!!!


We did not find the values of x and y---but, 16=16 is a true statement.


Therefore, there is an infinite no. of solutions.!


Power up,
HyperBrain!