Explanation Given: The system of equations is: 0.2 x − 0.1 y = 0.8 0.1 x + 0.3 y = 1.1 Calculation: Consider the set of equations: 0.2 x − 0.1 y = 0.8 …...…... (1) 0.1 x + 0.3 y = 1.1 …...…... (2) Multiply the equation (2) by − 2 , ( − 2 ) ( 0.1 x + 0.3 y ) = − 2 ( 1.1 ) − 0.2 x − 0.6 y = − 2.2 …...…... (3) Add the equations (1) and (3), 0.2 x − 0.1 y = 0.8 − 0.2 x − 0.6 y = − 2.2 ( 0 ) x − ( 0.1 + 0.6 ) y = ( 0.8 − 2.2 ) Thus, the value of y is: − 0.7 y = − 1.4 y = 14 7 = 2 Substitute 2 for y in equation (1)

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Chapter 4, Problem 16RP

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To calculate: The solution to the system of equations 0.2x−0.1y=0.8 and 0.1x+0.3y=1.1 by elimination method.

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Chapter 4, Problem 15RP

Chapter 4, Problem 17RP

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The solution to the system of equations 0.2 x − 0.1 y = 0.8 and 0.1 x + 0.3 y = 1.1 by elimination method.

Solution Summary: The author calculates the solution of the system of equations by elimination method.

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To calculate: The solution to the system of equations 0.2x−0.1y=0.8 and 0.1x+0.3y=1.1 by elimination method.

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