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Find the value of (x) from (x+2y=17) and (y=6).

Answer and explanation

Correct answer: \(x=5\)

Given \(y=6\), substitute it into \(x+2y=17\): \(x+2(6)=17\), so \(x+12=17\). Hence, \(x=17-12=5\). Therefore, \(x=5\) is correct. If \(x=6\), the left-hand side becomes \(6+12=18\), not 17. Exam tip: when one variable is given, substitute its value into the other equation to find the remaining variable.

Related tags

Pair Of Linear EquationsSubstitution MethodLinear Equations In Two VariablesAlgebraic MethodsClass 10 MathematicsAlgebraic Methods: Substitution Method And Elimination Method.Algebraic Methods Substitution Method And Elimination MethodPair Of Linea

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