How do you make a table out of the system.
3x + 4y = 18
x + 3y = 11?
x + 3y = 11
x = 11 - 3y
3x + 4y = 18
3 * ( 11 - 3y ) + 4y = 18
33 - 9y + 4y = 18
-5y = 18 - 33
-5y = -15 Diwide both sides with -5
y = ( -15 ) / ( -5 )
y= 3
x = 11 - 3 y
x = 11 - 3 * 3
x = 11 - 9
x = 2
Proof:
3x + 4y = 18
3 * 2 + 4 * 3 = 6 + 12 = 11
x + 3y = 11
2 + 3 * 3 = 2 + 9 = 11