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Which System has the same solution as the system of equation shown

8x + 3x =5
4x + 2y =3

A. 8x+3y=5
-8x + 4y= -6

B. 8x+3y=5
-8x - 4y= -6

C. 16x + 6y =5
12x - 6y = 9

D. 8x + 3y=5
8x + 4y= 3

User Soph
by
7.2k points

2 Answers

4 votes

Answer:

B||y = –8x – 6 and 1/2y = –4x – 3

Explanation:

Short and Sweet

User HadleyHope
by
7.9k points
5 votes

Answer: B. 8x+3y=5

-8x - 4y= -6

Explanation:

The given system of equations is expressed as

8x + 3y =5 - - - - - - - - -1

4x + 2y =3 - - - - - - - - - - 2

We would eliminate x by multiplying equation 1 by 4 and equation 2 by 8. It becomes

32x + 12y =20

32x + 16y = 24

Subtracting, it becomes

- 4y = - 4

y = - 4/ - 4

y = 1

Substituting y = 1 into equation 1. It becomes

8x + 3 × 1 =5

8x + 3 = 5 - 3 = 2

x = 2/8 = 1/4

Substituting x = 1/4 and y = 1 into the given options, it becomes

A. 8 × 1/4 + 3 × 1=5

2 + 3 = 5

- 8 × 1/4 +4 × 1 = 2

B. 8x+3y=5

-8x - 4y= -6

- 8 × 1/4 - 4 × 1 = -6

Therefore, the system of of equations that has the same solution as the given equation is

B. 8x+3y=5

-8x - 4y= -6

User Shrimpy
by
7.7k points

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