Which expression is equivalent to 6n - 27

The expression that is equivalent to 6n - 27 is 3(2n - 9).

what is the blank + 308 - 126 = 450

The blank is 268.

To solve the equation, you can add 126 to both sides of the equation (to isolate the variable):

+308 - 126 +126 = 450 +126
+308 = 576

Then, you can subtract 308 from both sides of the equation to find the value of the blank:

+308 - 308 = 576 - 308
0 = 268

Therefore, the blank is 268.

To find an expression that is equivalent to 6n - 27, we can simplify it or manipulate it using algebraic properties. In this case, there's not much simplification we can do, so let's leave it as it is. However, if you are looking for an expression that looks different but is equivalent, we can use the distributive property of multiplication over addition or subtraction.

The distributive property states that for any two numbers a, b, and c, the expression a(b + c) is equivalent to ab + ac. Using this property, we can distribute the 6n to both terms inside the parentheses.

6n - 27 = 6n + (-27)

Now, we can see that the expression 6n + (-27) is equivalent to 6n - 27 because it represents the same mathematical relationship. It simply uses different symbols to indicate addition or subtraction.

So, the expression that is equivalent to 6n - 27 is 6n + (-27).