Solve the System of Equations Using the Addition Method

question 79

Multiple Choice

Solve the system of equations using the addition method.
-2x - 2y = 9 10x - 10y = 18

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Definitions:

Arithmetic Concept

A fundamental principle or idea in mathematics that involves the study and application of numbers and operations such as addition, subtraction, multiplication, and division.

Learning Rate

The rate at which learning and improvement occur, often measured as a percentage improvement in time taken or reduction in errors after a specified number of experiences or cycles.

Learning Rate

The speed at which an individual or organization learns and applies new knowledge or skills, affecting the efficiency and effectiveness of performance.

Improvement Rate

A metric used to quantify the rate at which performance, efficiency, or quality improves over time.