How do you solve -4= m - 14?

2 Answers
Mar 2, 2018

Add 14 to both sides, so you get 10 = m.

Explanation:

With a question formatted like this, you need to find a way to isolate the variable m, to get a clean equation. For -4 = m - 14, you can isolate the variable by adding a positive 14 to both sides, giving the equation, -4 + 14 = m -14 + 14.

To simplify the first side, you can rearrange this part to look like
14 + (- 4), which is the same as 14 - 4, which is 10

For the second part, you can rearrange this part to look like
m + 14 + (-14), which is the same as m + 14 -14, which is m + 0 which leaves that part as just "m".

Combine the two parts and you get
10 (from the first part) = "m"(from the second part).

10 = m

Mar 2, 2018

The answer is m=10.

Explanation:

Isolate the variable m by doing the same actions to both sides of the equals sign. In this case, we want to add 14 to both sides. Here's the problem with steps written on the side:

color(white){color(black)( (-4=m-14, qquadqquad "The original problem"), (-4+14=m-14+14, qquadqquad "Adding "14" to both sides of the equals sign"), (-4+14=mcolor(red)cancel(color(black)(-14+14)), qquadqquad -14" and "14" add up to 0"), (-4+14=m+0, qquadqquad "Rewriting the above step"), (-4+14=m, qquadqquad m+0" is just "m), (10=m, qquadqquad -4+14" is the same thing as "14-4", which is "10), (m=10, qquadqquad"The answer!"):}

We arrived at the answer m=10. We can verify this answer by plugging m back in to the original problem and seeing if it's still true. (Basically, if we get something equaling itself, we're good.)

color(white)=>-4=m-14

=>-4=10-14

color(white)=>-4=-4

Since -4 does equal -4, our answer is correct. Hope this helped!