Question 465149
Hi,
 -4x+7y= 1 
  2x+5y=25 
*[tex \LARGE\ \ a_1x +b_1y = c_1 ]
*[tex \LARGE\ \ a_2x +b_2y = c_2 ]
{{{D[x]}}} = {{{(matrix(2,2,1,7,25,5))}}}   |Note: referred to as {{{A[x]}}} below
*[invoke cramers_rule_2x2 -4,7,1,2,5,25]