2y + 7x + y-1?
x=2y-1
x=1, y=1
2x + 2y = 44x + y = 1There are many methods you can use to solve this system of equations (graphing, elimination, substitution, matrices)...but no matter what method you use, you should get x = -1/3 and y = 7/3.
2y+26 = 28 2y = 28-26 2y = 2 y = 1
3y + 2y + 4 + 1 = 805y + 5 = 805y = 75y = 15
80 = 3y + 2y + 4 + 1 75 = 5y 15 = y y = 15
6x+2y=4 gives y=2-(1/3)x
2y + 7x + y-1?
To solve for two unknowns (x and y) it is necessary to have two independent equations.
x=2y-1
get it to y= -2y = 1 - 2x y = x - 0.5
x=1, y=1
(3, 2)
2x + 2y = 44x + y = 1There are many methods you can use to solve this system of equations (graphing, elimination, substitution, matrices)...but no matter what method you use, you should get x = -1/3 and y = 7/3.
2y+26 = 28 2y = 28-26 2y = 2 y = 1
To solve for 3 unknown variables you need 3 independent equations. You have only 1.