x = 2, y = 1
1. 6x - 5y = 22 2. 5x - 9y = -1 1 times 5: 30x - 25y = 110 2 times 6: 30x - 54y = -6 Subtract : 29y = 116, so y = 4 and x therefore = 7
8+y = 7+5y y-5y = 7-8 -4y = -1 y = 1/4
3x + 6x +1 = 10 9x = 10 - 1 9x = 9 x = 1
(5, 1)
(2, 1)
The question is not quite clear, do you mean -6x+3y = -18 and -10+5y = -30? If so then the solution is: -10+5y= -30 5y = -30+10 5y = -20 y = -4 Substitute the value of y into the equation -6x+3y = -18: Answer: x = 1 and y = -4
x = 2, y = 1
x= -1 y=-1
x = 2 and y = 1 The lines intersect at the point (2, 1)
1. 6x - 5y = 22 2. 5x - 9y = -1 1 times 5: 30x - 25y = 110 2 times 6: 30x - 54y = -6 Subtract : 29y = 116, so y = 4 and x therefore = 7
x=(-5y-1)/3
5y + 7 = 25y = -5y = -1
8+y = 7+5y y-5y = 7-8 -4y = -1 y = 1/4
(4, -1)
(1, -1)
2x + 9 = 6x + 1 9 - 1 = 6x - 2x 8 = 4x x = 2