[tex] \frac{m+3}{4} =\frac{m-5}{7} [/tex]
Cross multiply (m + 3) * (7) and (4) * (m - 5).
7m + 21 = 4m - 20
Subtract 4m from both sides.
3m + 21 = -20
Subtract 21 from both sides.
3m = -41
Divide both sides by 3.
m = -41/3
