Question

Write an equation to represent the number puzzle. Use x as the

variable. Then find the solution using guess-check-and-improve.

6 times a number, plus 2, is equal to 7 added to 4 times the number.

What is the number?


a. 6x + 2 = 7 + 4x, 3
b. 6x + 2 = 7 + 4x, 2.5
c. 6x + 2 = 7 + 4x, 2
d. 6x − 2 = 7 + 4x, 4.5

Answer 1

b.

Explanation:

6 times a number plus 2: 6x+2

7 added to 4 times the number: 7+4x

6x+2 = 7+4x

2x = 5

x = 2.5