0
( m^2 - m - 3 ) + ( m - 4 ) = m^2 - m - 3 + m - 4 = m^2 - 7Answer: m^2 - 7
m-15=3
m-15+15=3+15
m=3+15
m=18
m=y2-y1/x2-x1
m=-1- 3/3-(-3)
m=-4/6
m=-2/3
m 3 and 3
m + 3 - 20 = 5
m + 3 = 25
m = 22