3y+5=y-3
subtract the y from the other side then:
2y+5=-3
subtract the 5
2y=-8
then divide 2 by both sides and your final answer should be:
y= - 4
x = 3 and y = 0
10-y=2y+3 10-3=2y+y 7=3y 7/3=y
3x + 3y = 14 - 4xSubtract 3x from each side:3y = 14 - 7xDivide each side by 3:y = (14 - 7x) / 3
y = -1
The solution pair is (-7, 22), demonstrated as follows: (1) x + y = 15 : given; (2)4x + 3y = 38 : given; (3)3x + 3y = 45 : equation (1), multiplied by 3; (4) x = -7 : equation (2), minus equation (3); (5) y = 22 : equation (1), minus equation (4).
2x+3y=13 3x-y=3 x=2
(3,3)
3y - 3 = 2y + 5 3y - 2y = 5 + 3 y = 8
x = 3 and y = 0
2y + 3 = 3y + 9 2y - 3y = 9 - 3 or -y = 6 so y = -6
3y + 8 = 3 -8 -8 3y=-5 (3y)/3=-5/3 y=(-5/3)
7(3y-2)-(-4y+9)
10-y=2y+3 10-3=2y+y 7=3y 7/3=y
3x + 3y = 14 - 4xSubtract 3x from each side:3y = 14 - 7xDivide each side by 3:y = (14 - 7x) / 3
y = -1
Slope = 5/3 = 1.66...
(-1, 0)