Question

Pls tell me the root of the following: 2m-3=3/10(5m-12).
Pls maths exam tomorrow.

Answer 1

2m-3=3/10(5m-12)
20m-30=3/5m-12
100m^2-240m-150m+360=3
100m^2-390m+357=0
m=-b+-√b^2-4ac
        2a

m=390+-√9300
         200
m=390+-10√93
       200
m=390+10√93    ⇒m=39+√93
       200                      20
m=39-√93
        20

Answer 2

$2m - 3 = \frac{3(5m-12)}{10}$

20m - 30 = 15m - 36

20m - 15m = -36 + 30

5m = - 6

m = -6/5 = -1.2