Question 1073239

5x + 6y = -13/2
7x - 9y = 5/2
<pre>{{{matrix(1,6, 5x + 6y, "=", - 13/2, "------", eq, "(i)")}}}
{{{matrix(1,6, 7x - 9y, "=", 5/2, "--------", eq, "(ii)")}}}
Multiply eq (i) by LCD, 2 to get: 10x + 12y = - 13 ----- eq (iii)
Multiply eq (ii) by LCD, 2 to get: 14x - 18y = 5 ------- eq (iv)
Solve to get: {{{highlight_green(matrix(2,3, y, "=", - 2/3, x, "=", - 1/2))}}}