Answer:
[tex]\dfrac{v2*m2}{2*v1 - v2} = m1[/tex]
Step-by-step explanation:
multiply both sides of the equation by (m1 + m2). Bring v1 to the numerator.
v2(m1 + m2) = 2m1 * v1 Remove the brackets on the left.
v2*m1 + v2*m2 = 2*m1*v1 Subtract v2 m1 from both sides.
v2*m2 = 2m1*v1 - v2*m1 Use the distributive property to get m1 alone on the right.
v2*m2 = m1(2*v1 - v2) Divide both sides by (2*v1 - v2)
[tex]\dfrac{v2*m2}{2*v1 - v2} = m1[/tex]