Math Problem Statement

Adria has the following system of equations on her math homework.

‒2x+y=6 x−y=1

What is the value of x in the solution to this system of equations? A.7

B.‒7

C.8

D.‒8

Solution

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Math Problem Analysis

Mathematical Concepts

Algebra
Systems of Linear Equations
Substitution Method
Elimination Method

Formulas

y = mx + b (equation of a line)
Linear equation system: ax + by = c

Theorems

Substitution Method for Solving Systems
Elimination Method for Solving Systems

Suitable Grade Level

Grades 8-10