Question

Which equation would best help solve this problem?

Five added to 3 times a number is equal to 8 less than 5 times the number.









A.

3x + 5 = 5x – 8






B.

3x – 4 = 5x + 8






C.

4x + 3 = 8x – 5






D.

8x + 5 = 4x + 3

Answer 1

let n = a number

then...

2n + 5 is Five added to 2 times a number

4n - 7 is 7 less than 4 times the number

set the expressions equal and solve...

2n + 5 = 4n - 7
2n = 12
n = 6