Something needs to be an EQUATION in order for you to be able to SOLVE it. There's no "=" here so it's not an equation. What is the space between 3y and 21 supposed to mean? Clean it up!
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-x+3y+6x-6y=5x-3y
is the x before the 21 is multiplication then I need a value for x to solve, but for the sake of an answer I will assume it's 6x-12=21 6x-12=12 +12 +12 6x=24 /6 /6 x=4 is the x before the 21 is multiplication then I need a value for x to solve, but for the sake of an answer I will assume it's 6x-12=21 6x-12=12 +12 +12 6x=24 /6 /6 x=4
If you mean: 6x+3y = -9 then the perpendicular slope works out as 1/2 or 0.5
6x - 3y = 36 x intercept: If y = 0, then 6x=36 so x=6 y intercept: If x = 0, then -3y=36 so y = -12
If 2x-y = 4 then 6x -3 years =?