5x + 4
2x+7=3 is an equation. However, 2x=-4 is equivalent. So is x=-2. And an infinite number of others.
8x-4
4x plus 3 plus 2x is equivalent to expression 6x plus 3.
x equals 4
5x + 4
-2x + 2y = 4 is equivalent to twice -2 + y = 2 which is the equation of a straight line.
2x+7=3 is an equation. However, 2x=-4 is equivalent. So is x=-2. And an infinite number of others.
8x-4
4x plus 3 plus 2x is equivalent to expression 6x plus 3.
x equals 4
2x+4+7x-4 is the same as 9x
-2x^4+16 +2x^4+9-3x^5=-3x^5+25. There is no "answer" because there is no equation.
2x + x + 4 +2x = x + 20 5x + 4 = x + 20 5x - x = 20 - 4 4x = 16 x = 4
14
(3x+1)(2x+4) = 6x2+4+2x+12x = 6x2+14x+4
It is an expression.