It is called the commutative property, a + b = b + a
There is no property that justifies it. The equation is true for some values of x, not for others.
no
3x + 2 = 3x + 6 This is not possible.
Their graphs are.
(2, -1)
4x plus 7 plus 3x equals 19 plus xx = 2
what is a slope
2x+3x = 5x
Assuming the question to mean 3*x+3 = 3*(x+1) The reverse, ie 3*(x+1) = 3*x + 3*1 is known as the distributive property of multiplication over addition.
y=4x2+3x+8
-46 = 3x + 7x
50, 53, 59