bob2000 bob2000 22-09-2018 Mathematics contestada I NEED HELP ASAP!!!!! Use algebra tiles to find the value of x when the expression 7 x + 6 = 4 x + 9. What is the value of x? Use algebra tiles to find the value of x when the expression 6 x + 12 = 3 x + 6. What is the value of x? What is the value of n when 5n - 11 = 3n + 7? What is the value of n?