2x = 5x - 12
First step is to move all the like terms to one side of the equation
2x (-5x) = -12
-3x = -12
Next, we can divide both sides by -3 to get rid of the -3 on the left side
(-3x)/-3 = (-12)/-3
x = 4
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meant to be e^x = 2e^1-2x
2x - 4 = -10 2x = -10 +4 2x = -6 x = -3
2x + 7 = 1 Therefore, 2x = -6 x = -6/2 x = -3
3x-2 = 2x+3 3x-2x = 3+2 x = 5
-1-2x-4x=19-6x-1 = -19x = 3