3x + 2 + 2x = 7; 3x + 2x = 5x, so 5x + 2 = 7;
7-2=5, so 5x=5.
5x divided by 5 and 5 divided by 5 equals 1, so x equals 1.
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3x - 2 = 2x + 4 3x - 2x = 4 + 2 x = 6
LMN = LM + MN = 3x + (2x +2) = 5x + 2
It is a mathematical equation, usually written like this: 5x - 7 + 2x = 3x - 2 + 4x
so 3x + 2 = x + 12 ie 2x = 10 x =5
6x^2 + 11x + 4 is a Quadratic Statement. It is NOT an equation, because there is no 'equals' (=). It will factor to ( 3x + 4)(2x + 1)