Question

Solve for m d=n+7m Thank you

Answer 1

Answer:  $\displaystyle m = \frac{d-n}{7}$

This is the same as writing m = (d-n)/7

The parenthesis are essential for the second format because it tells us to divide all of (d-n) over 7, and not just n over 7.

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Explanation:

Here is one way to solve for m. I'll go over each step in the next section below.

$d = n+7m\\\\n+7m = d\\\\7m = d-n\\\\m = \frac{d-n}{7}$

The idea is to get the variable m by itself.

Think of n+7m as 7m+n since we can add in any order. Then undo the "plus n" portion by subtracting n from both sides (step 3).

In the 4th step, I divided both sides by 7 to undo the multiplication that is going on with 7m aka 7*m

In general we follow PEMDAS backwards to undo each operation done to the variable we're solving for. Let me know if you have any questions about what I mean.

Answer 2

Answer:

m=d/7−n/7

Step-by-step explanation: