(5,3)
(0,7)
It equals 285
x+y=15, or y=15-x4x+3y=38Substitute y in 2nd equation with 15-x:4x+45-3x=38x=-7y=15-(-7)=22(-7,22)
-9
(5,3)
(0,7)
15
It equals 285
x+y=15, or y=15-x4x+3y=38Substitute y in 2nd equation with 15-x:4x+45-3x=38x=-7y=15-(-7)=22(-7,22)
45
15
-15
30
-9
15 plus -3 equals 12 12 divided by -6 equals -2
8 plus 15 = 23