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10 cards from this deck
Equation where highest power of variable is 1
Finding value of variable that makes equation true
Value of variable that satisfies the equation
At most one solution
Must be balanced - same operation on both sides
Expand, rearrange, group, factorise, solve, check
Multiply through by common denominator first
Values that make denominators zero
Substitute back into original equation
LHS equals RHS after substitution
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