Given the equation 4x + 7 = 3(2x − 5), solve for the variable. Explain each step and justify your process.


B.Sam solved a similar equation below. Is Sam's solution correct? Explain why or why not.

5x − 1 = 2(x + 4)

5x − 1 = 2x + 8

7x − 1 = 8

7x = 7

x = 1