Math Problem Statement
Suku ketiga dan suku keenam barisan aritmetika berturut-turut -2 dan -7. Nilai suku ke-20 adalah
Solution
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Math Problem Analysis
Mathematical Concepts
Arithmetic Sequence
Linear Equations
Algebra
Formulas
U_n = a + (n-1) * b
Theorems
Arithmetic Sequence Formula
Suitable Grade Level
Grades 9-11
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