abbyschroederr
abbyschroederr abbyschroederr
  • 09-02-2018
  • Mathematics
contestada

Use the elimination method to solve the system of equations. Choose the correct ordered pair

Use the elimination method to solve the system of equations Choose the correct ordered pair class=

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kirstenknowles2
kirstenknowles2 kirstenknowles2
  • 09-02-2018
5x-3y=31
-1(2x+3y=25)
3x=6
x=2

5(2)+3y=31
10+3y=31
-10      -10
3y=21
y=7

choice b (2,7)
Answer Link
eudora eudora
  • 15-07-2019

Answer:

Option B

Step-by-step explanation:

We have to solve the equation by elimination method equations are

5x + 3y = 31 --------(1)

2x + 3y = 25 --------(2)

Now we subtract equation (1) from (2)

( 5x + 3y ) - ( 2x + 3y ) = 31 - 25

( 5x - 2x ) + ( 3y - 3y ) = 6

3x = 6

x = 2

Now we put x = 2 in equation (1)

5 × 2 + 3y = 31

10 + 3y = 31

3y = 31 -10

3y = 21

y = 7

Solution is ( 2, 7 )

Therefore, Option B is the answer.

Answer Link

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