Linear equations question

[Audentes]

Hi, I have a question about a literal/linear equation problem.

the question is z=b+(m/a)

my answer was a=(b+m/z) but the correct answer is a=(m/z-b).

what did i do wrong and how did I get it wrong? I attached my work.

thanks so much
flo

 

[tkhunny]

Second line needs [math]a\cdot b[/math]

 

[Audentes]

Ohhhhh okay thank you! I got it now

 

[Steven G]

We know that 7 = 5 + 2.

Is 7*3 = 5 + 2*3?
How about 7*3 = 5*3 + 2?
Maybe 7*3 = 5*3 + 2*3?

 

[Audentes]

7*3 (21)=5*3+2*3 (21)

so that would be checking the answer then, I probably should have did that. Thanks for the help