-2y = 10 2y = -10 y = -5
y=7+x =x=7-x
What are we solving here for, Z, X, or Y?If solve for Z then the answer would be z = x + yIf solve for X then the answer would be z = z - yIf solve for Y than the answer would y = z - xHope this help.
the answer is: (y-b)/x = m y = mx + b y - b = mx (y-b)/x = m
T/y = x/wMultiply each side by 'x':Tw/y = x
5
y = 2x -1 y = 5x -13 So: 5x -13 = 2x -1 5x -2x = 13 -1 3x = 12 x = 4 and by substituting y = 7
-10
y - 4 = 9 y - 4 + 4 = 9 + 4 y = 13
Solved for y: y=(3x-13)/5 Solved for x: x=(5y+13)/3
You need two independent linear equations to solve for two unknown variables.
17
-2x+13y=11 13y=2x+11 y=2x/13 + 11/13
16
-13
-y + y equals 0.
If: x+y = 8 and 2x-y = 5 Then by adding the equations together: 3x = 13 or x = 13/3 By substitution into the original equations: x = 13/3 and y = 11/3