bby2010 bby2010

12-11-2019
Mathematics

contestada

Solve the system using addition
3x+ 5y =67
- 3x + y = -18 8
The solution is x= and y=

Respuesta :

ad2003ez ad2003ez

12-11-2019

Answer:

x = 8.95 y = 8.03

Step-by-step explanation:

3x + 5y = 67

-3x + y = -18.8

Add them

6y = 48.2

divide by 6

y = 8.03

now substitute into one equation

3x + 5(8.03) = 67

3x + 40.15 = 67

subtract 40.15

3x = 26.28

divide by 3

x = 8.95

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