pena3303333 pena3303333

12-05-2020
Mathematics

contestada

Use the elimination method to solve each system of equations,
11. 3x + 4y - 38
5x – 4y - 10
a. (5.6)
b. (6,4)
c. (6,5)

Respuesta :

Isabel45678 Isabel45678

12-05-2020

Answer:

x=6 y=5

c. (6,5)

Step-by-step explanation:

just add the two equations together and the 4ys cancel out

3x+4y-38

5x-4y-10

8x-48

+48

8x=48

divide by 8

x=6

then add 6 in as x to the an equation

5(6)-4y-10

30-4y-10

20-4y

20=4y

divide by 4

y=5

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