Question

(m - 18 / 5) - (4m - 14 / 7) = 1
I need help solving this

Answer 1

Solving it for M?

Answer 2

Yes

Answer 3

m - 18/5 - 4m + 2 = 1.

Answer 4

-3m = 1 - 2 + 18/5

Answer 5

How did you get + 2

Answer 6

Subtracting a negative number gives you a positive. Just like multiplying two negatives gives you a positive value.

Answer 7

The way I solved it:

With the LCD 35

35(m - 18 / 5) - 35(4m - 14 / 7) = 35(1)
(35m - 18 / 5) - 140m - 14 / 7) = 35
(35m - 18 / 5) - (140m - 14 / 7) = 35
..

Answer 8

@wouterdobber

Answer 9

You are not distributing into both values inside the parenthesis with the lcd

Answer 10

Exactly what rachelfreak said.

Answer 11

But I do not think it's necessary to multiply by 35 though.

Answer 12

i agree with wouterdobber

Answer 13

Where we got to before: -3m = 1 - 2 + 18/5. From here you could just make it, -5/5 +18/5 = -3M.

So: 13/5 = -3M
So: 65/5 = -M
So 15 = -M
So M = -15

Answer 14

Wait I messed up.

Answer 15

39/5 = -M
So: M = - 39/5
So M = - 7.8 I think.