y = 14
The Commutative Property of Addition.
(2, 2)
2x + 5y = 16 -2x - 3y = -14 2y = 2 y = 1 / x = 5.5 (5.5,1) or (5 1/2,1)
11y + 16 + 5y = 16y + 16 = 16(y + 1)
(9,3)
The Commutative Property of Addition.
no
(2, 2)
2x + 5y = 16 -2x - 3y = -14 2y = 2 y = 1 / x = 5.5 (5.5,1) or (5 1/2,1)
(x, y) = (3, 2)
11y + 16 + 5y = 16y + 16 = 16(y + 1)
(9,3)
(-5, 2)
x=(-5y-1)/3
5y + 7 = 25y = -5y = -1
If: -x-3y = -4 and 3x+5y = 16 Then: x = 7 and y = -1
This is Simultaneous equ'ns. 3x + 5y = -1 2x -5y = 16 Add the two eq'ns. This will eliminate 'y' Hence 5x = 15 x = 3 When x = 3 , substitute into either eq'n to yimnd 'y'. Hence 3)3) + 5y = -1 9 + 5y = -1 5y = -10 y = -10/5 = -2 So the solution in ( x,y) form is ( 3, -2).