The algebraic expression for three more than a number is:
X + 3
3x +3
3+10x
a common factor
3x+5
3x + 7
n = number. (3/7)n + 12 ========
3+ 6/n
Let the number be a a + 8
One more than the square of x
N + 6
n = number. n + 5 ====
X = " a number " X + 20