Find the variable that cancels out. Unlike x in the equation 3x - 4 11 that has a value that cannot change r and C can take on values that can change. Now solve by adding the two equations.
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Math explained in easy language plus puzzles games quizzes worksheets and a forum. This equation has two variables and these are r and C. Ann wants to split this money into two. Solving for a variable is also called isolating the variable so you want to move everything away from it.