Question 789054
we are given two equations in two unknowns
4x-y = 3
9x-2y = 11
solve first equation for y
-y = 3 -4x
y = 4x -3
substitute for y in second equation
9x -2*(4x -3) = 11
9x -8x +6 = 11
x = 5
now substitute for x in fist equation
4*5 -y = 3
20 -y = 3
y = 17
now subtitute for x and y in second equation as a check
9*5 - 2*17 = 11
45 - 34 = 11
11 = 11
so x = 5 and y = 17 answers check