Grade 7 - Equivalent Expressions

Which expression is equivalent to (−3)x+(−3)(−12)?

Enter the value of p so the expression 4(n+7) is equivalent to (n+p)4.

Enter the value of n so that the expression (3y+1)+(2y+8) is equivalent to (ny+9).

Enter the value of p so that the expression 8+5n is equivalent to p(4+2.5n).

(a)  

Select all expressions that are equivalent to 2x + 3x + 8 - 3x - 2.

Enter the value of n so the expression (7y + 6) + (3y - 2) is equivalent to (ny + 4).

Enter the value of n so that the expression (9y - 8) + (y + 5) is equal to (ny - 3).

Enter the value of b when the expression 10x + b is equivalent to 2(5x - 2).

Brandon is shown two expressions, 2(4x+3) and 12x−2. Brandon claims that the expressions are equivalent because when x = 2 both expressions are equal to 22. To show that Brandon's claim is false, evaluate each expression when x = 3. What is the value of 2(4x+3) when x = 3?

Brandon is shown two expressions, 2(4x+3) and 12x−2. Brandon claims that the expressions are equivalent because when x = 2 both expressions are equal to 22. To show that Brandon's claim is false, evaluate each expression when x = 3. What is the value of 12x−2 when x = 3?