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Lelechka [254]
3 years ago
13

Finish solving the system of equations –9.5x – 2.5y = –4.3 and 7x + 2.5y = 0.8 using the linear combination method.

Mathematics
1 answer:
trasher [3.6K]3 years ago
3 0

Answer:

The value of x is 1.4 and y is -3.6

Step-by-step explanation:

The steps are :

- 9.5x - 2.5y =  - 4.3 -  -  - (1)

7x + 2.5y = 0.8 -  -  - (2)

(1) + (2)

- 9.5x + 7x - 2.5y + 2.5y =  - 4.3 + 0.8

- 2.5x =  - 3.5

x =  \frac{7}{5}  \: or \: 1.4

substitute \: x = 1.4 \: into \: (2)

7(1.4) + 2.5y = 0.8

9.8 + 2.5y = 0.8

2.5y =  - 9

y =  -  \frac{18}{5}  \: or \:  - 3.6

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