Question 846545
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Hi,
x = {{{ highlight_green(2y+5)}}}
5(2y+5)-10y=25
 10y + 25 -10y = 25
           0 = 0  There are infinite solutions for this system.  
 x = 2y + 5  and 5x-10y = 25 are the same line:
Note:  x = 2y + 5, 5x = 10y + 25   and 5x-10y = 25