Solve the System of Equations: 5x + 3y = 21 and 2x

Math Problem Statement

Jika 5x + 3y = 21 dan 2x - 4y = -2, maka nilai 2x + 7y adalah ...

The question on the image is asking for the value of $2x + 7y$ given the system of equations:

$5x + 3y = 21$ $2x - 4y = -2$

Let's solve this system of equations and find the value of $2x + 7y$ . I'll walk you through the steps.

We can use either substitution or elimination to solve for $x$ and $y$ . Let's go with elimination for clarity:

Equation 1: ( 5x +

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Algebra
Linear Equations
Systems of Equations

Ax + By = C (General form of a linear equation)
Elimination or Substitution Method for solving systems of equations

Basic properties of linear equations

Grades 9-10

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