8+y = 7+5y y-5y = 7-8 -4y = -1 y = 1/4
f(x)= (4 - 5y)/8 f(y)= (4 - 8x)/5
If the equation is -20x-5y=40 then the answer is -5y=20x+40 which equals y=-4x-8 If the equation is -20x+5y=40 then the answer is 5y=20x+40 which equals y=4x+8
4x + 5y = -8 is an equation with two variables. While you can solve for y = something, you won't come up with a single number. For example, 4x + 5y = -8 5y = -4x - 8 y = -4x/5 - 8/5. And you can do the same for x = something in terms of y.
2y = 4x - 16 5y = 4x + 8 Subtract the first equation from the second: 3y = 24 so that y = 8 Substitute this into the first equation: 16 = 4x - 16 ie 32 = 4x so that x = 8 So the solution is (8, 8)
8+y = 7+5y y-5y = 7-8 -4y = -1 y = 1/4
5y+8=7y 2y=8 y=4
8 + 5y = 18 Therefore, 5y = 10 y = 10/5 y = 2
5y+8=7y subtract 5y from each side , 5y+8=7y -5y -5y 8=2y /2 /2 4=y
y=8
Y=30
3y-8+5y = 2y-39 3y+5y-2y = -39+8 6y = -31 y = -31/6
13y+3z+8
It is a linear equation with a single variable, y.
If: 3y+8 = 5y-20 Then: 3y-5y = -20-8 So: -2y = -28 And: y = -28/-2 => y = 14
5y+8
8 - 5y = 12 -5y = 4 y = -4/5