# Solving an Equation by Substitution

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Please solve:

v=ab/(c+d)

where v = velocity

where a = 6.67*10^-11 N m^2 kg^-2

where b = 5.97*10^24kg

where c = 6.37*10^3km

where d = 385km

could you show all workings and all terms in the equation should be in SI units

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##### Solution Summary

An equation is solved by substituting values for variables.

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First transform km into meters....1 km = 1000 m

c = 6370 km x ...

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- BSc, University of Bucharest
- MSc, Ovidius
- MSc, Stony Brook
- PhD (IP), Stony Brook

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