Question

Which value is the solution to the equation 2b +5b - 7 = 14 when the replacement set is {2, 3, 4, 5}?

Answer 1

b = 3

Explanation:

2b + 5b - 7 = 14

7b - 7 = 14 ( add 7 to both sides )

7b = 21 ( divide both sides by 7 )

b = 3

the value from the replacement set is 3