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Question: How to remove unwanted factors

Question:How to remove unwanted factors

Damon Delorenzis 10
April 15 2015
1

I have an equation

Eq1 := (2*(.2916666667*Mtrailer+.5000000000*M1))*(diff(y1(t), t, t))+MR*(.5*Mtrailer*g+M1*g)+Kspring*MR^2*y1+Cd2*MR*(diff(y1(t), t))

When I use the solve command to solve for diff(y1(t))

ydotdot := solve(Eq1, diff(y1(t), t, t))

I get the following

ydotdot := -2.500000000*10^9*MR*(2.*Kspring*MR*y1+2.*Cd2*(diff(y1(t), t))+2.*M1*g+Mtrailer*g)/(2.916666667*10^9*Mtrailer+5.000000000*10^9*M1)

Why do I get the unwanted factors 10^9, and how can I get rid of them?
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