Question 1178089

a-2b=9 2a-3b=4
<pre>DON'T ever solve a problem like this the way the other person did! It's just UNHEARD of and ridiculously UNNECESSARY!
a - 2b = 9 ----- eq (i)
2a - 3b = 4 ---- eq (ii)
2a - 4b = 18 --- Multiplying eq (i) by 2 ------ eq (iii)
{{{highlight_green(matrix(1,3, b, "=", - 14))}}} ----- Subtracting eq (iii) from eq (ii)
Substitute - 14 for b in either eq (i) or (ii) to get the value of "a."