What is the first step to take when solving this linear system of equations by the addition-subtraction method? 2x + 4y = 3 x +

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What is the first step to take when solving this linear system of equations by the addition-subtraction method? 2x + 4y = 3 x +

3y =13 A) solve for y in terms of x B) solve for x in terms of y C) multiply the first equation by −2 D) multiply the second equation by −2

Mathematics

1 answer:

Free_Kalibri [48] · Answer 1 · 2022-07-06T19:27:48+03:00

The right answer is Option D.

Step-by-step explanation:

Given equations are;

2x+4y=3 Eqn 1

x+3y=13 Eqn 2

When we use subtraction-addition method, we make one of the variables same with opposite signs so that only one variable remains after addition or subtraction.

In the given problem, we will multiply Eqn 2 with "-2" so that the x variables become equal and then we can add both the equations and solve for y.

Therefore,

The first step will be to multiply the second equation by -2 to solve the linear system of equations.

The right answer is Option D.

Keywords: linear equations, subtraction

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