Question

Three times the sum of a number n plus 1 equals two times the sum of the number plus 4. Which equation can be used to find n?

A. 3(n+1)=2n+4
B. 3(n+1)=2(n+4)
C. 3(n+4)=2((n+1)

n=

Answer 1

B.

Explanation:

3(n+1)=2(n+4)

3 × n + 3 × 1 = 2 × n + 2 × 4

3n + 3 = 2n + 8

3n - 2n = 8 - 3 we regroup by categories (unknown and number)

n = 5