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In the substitution method, the first step is to:

Class 10Substitution MethodAlgebra — Systems of Equations
  • AExpress one variable in terms of the other from one equation
  • BAdd the two equations
  • CSubtract the two equations
  • DMultiply both equations by a constant

Step-by-Step Solution

Substitution begins by isolating one variable (say in terms of ) from one equation, then putting that expression into the other equation.
Answer: A) Express one variable in terms of the other from one equation

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