Help please! Show work and explain

Ben is three times as old as samantha, who is two years older than half of michel's age. if michel is 12. how old is ben?

Use the linear combination method to solve the system of equations. explain each step of your solution. if steps are not explained, you will not receive credit for that step. 2 + 9 = −26 −3 − 7 = 13

If the line in the graph is shifted up two units which is the equation of the new line