Math Problem Statement

a) Luis compró algunos lápices en $7.00 y solo uno en $9.00; sí en total pagó $65.00, ¿cuántos lápices compró?

Solution

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Math Problem Analysis

Mathematical Concepts

Algebra
Linear Equations

Formulas

Linear equation formula ax + b = c

Theorems

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Suitable Grade Level

Grades 7-9