x + 3
(x+y)+3
6x2-5x-6
(75/3)+6 = X 25 + 6 = X 31 = X
423 is a composite number because it has more factors than one and itself. Its prime factorisation is 3 x 3 x 47.
x + 3
X+3
Assuming that the question is double a number is 3 more than THE number, let the original number be x then double the number (= 2x) is 3 more than the number (= x+3) So solve 2x = x + 3 Take x away from each side: x = 3
(x+y)+3
6 x 3 + 2 = 20
6x2-5x-6
Three less than twice x is 2x-3.Two more than the quantity 3 times x is 3x + 2.The product of these is (2x-3)(3x+2), which can also be written as:(6x2 - 5x - 6)
Three less than twice x is 2x-3.Two more than the quantity 3 times x is 3x + 2.The product of these is (2x-3)(3x+2), which can also be written as:(6x2 - 5x - 6)
(75/3)+6 = X 25 + 6 = X 31 = X
If X is the variable, then X/(-12+9) = x/(-3) = -X/3
423 is a composite number because it has more factors than one and itself. Its prime factorisation is 3 x 3 x 47.
(2x)+3