Given:
2x - 3y = 2
3x + 2y = 3
Take the first equation, and solve for x:
x = (2 + 3y) / 2
Now plug it into the second equation:
∴ 3(2 + 3y) / 2 + 2y = 3
∴ 3 + 9y/2 + 2y = 3
∴ 9y/2 + 2y = 0
∴ 22y = 0
∴ y = 0
Then you can take that value of y, and plug it into either of our first equations to find x;
2x - 3y = 2
∴ 2x - 3(0) = 2
∴ 2x = 2
∴ x = 1
So x is equal to one, and y is equal to zero.
4y = 2y + 40 4y - 2y = 2y -2y +40 2y = 40 y = 20 check 4(20) = 2(20) +40 80 = 80
-2y = 10 2y = -10 y = -5
42+4y -12 = 13y -12 -2y 4y -13y+2y = 12 -12 -42 -7y = -42 y = 6
-2x - 2y = -122x + 2y = 122y = 12 - 2xy = 6 - x
3y - 3 = 2y + 5 3y - 2y = 5 + 3 y = 8
x^2y(2x + y)
2y = 4x + 4y = 2x + 2
you can not solve this equation
many solutions
4y+2 = 2y+6 4y-2y = 6-2 2y = 4 y = 2
2y + 4 = 3ySubtract 2y from both sides:4 = ywhew
3x + 2y = 12 ie 2y = 12 - 3x so y = 6 - 3x/2
3x+2y=6 2y=-3x+6 y=-1.5x+3
Subtract by 7x and divide by 2.
6x+2y=4 gives y=2-(1/3)x
3y + 2y + 4 + 1 = 805y + 5 = 805y = 75y = 15
Can you help with this equation? Thanks. Solve for x and y and z for the following. x plus y plus z equals 9 x plus 2y plus 3z equals 23 x plus 5y plus -3z equals -7