Question

Simplify each expression by combining like terms. Then evaluate the expression.

31n +5n -n+19n if n = 20

Answer 1

Answer: 54n. If n = 20, the expression is equal to 1,080.

Explanation:

To simplify we will combine like terms, as the information given suggests, then we will substitute the given and evaluate.

Given:

31n + 5n - n + 19n

Add 5n to 31n:

36n - n + 19n

Subtract n from 36n:

35n + 19n

Add 19n to 35n:

54n

Substitute if n = 20:

54(20)

Multiply:

1,080