do you mean:
2x-4=6 1. add 4 to both sides
2x=10 2. divide by 2 on both sides so you can get "x" by itself.
x=5 3. answer
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2x - 6 = 4 2x = 4 + 6 = 10 x = 10/2 = 5 ∴ x = 5
For example, if you have (0, 6) or (3, 1). Which of them is a solution to y - 2x = 6? Check (0, 6): y - 2x = 6, substitute 0 for x, and 6 for y into the equation 6 - 2(0) =? 6 6 - 0 =? 6 6 = 6 True, then (0, 6) is a solution. Check (3, 1): y - 2x = 6, substitute 3 for x, and 1 for y into the equation 1 - 2(3) =? 6 1 - 6 =? 6 -5 = 6 False, then (3, 1) is not a solution.
If: y = x+6 and y = 2x Then: x+6 = 2x And: 6 = 2x-x => 6 = x So: x = 6 and y = 12
2x + 4 = 162x + 4 - 4 = 16 - 42x = 122x/2 = 12/2x = 6
{-1,-2}