Here's the question you clicked on:
Jiimy20110
Currently, Sam's coach is twice as old as Sam. When Sam started soccer 10 years ago, his coach was 3 times his age. How old is Sam now?
|dw:1350960568419:dw|
|dw:1350960670105:dw|
c = 2s c-10 = 3(s-10) --> c - 10 = 3s - 30 --> c = 3s - 20 2s = 3s - 20 s = 20 c = 40 Wow that should not have been that hard for me. Sorry it took so long
|dw:1350960915774:dw|
Now he is twice sam's age. That is where the first equation came from. 10 years ago, so start with c - 10 and s - 10, the coach was 3 times sam's age. That is where the 3 comes from. I simplified then substituted in the 2s for c to solve for s. Then I knew c
can you please solve the new problem on top
y/-2 + 5 = 12 y/-2 + 5 - 5 = 12 - 5 y/-2 = 7 -2 * y/-2 = 7 * -2 y = -14
\[x=\frac{ x-6 }{ 2 } =3\]\[2x=2\times \frac{ x-6 }{ 2 } =3 \times 2\]\[2x=x-6 =6\]Impossible, was there a typo in your original equation
|dw:1350961540644:dw|