adevorchik adevorchik
  • 15-01-2021
  • Mathematics
contestada

Solve by elimination.
2x + 8y = 60
5x + 4y = –10

Respuesta :

zfcc8cs69b zfcc8cs69b
  • 15-01-2021

Answer:

2x + 8y = 60= 30

5x + 4y = –10= -2

Step-by-step explanation:

Simplifying

2x + -8y = 60

Solving

2x + -8y = 60

Solving for variable 'x'.

Move all terms containing x to the left, all other terms to the right.

Add '8y' to each side of the equation.

2x + -8y + 8y = 60 + 8y

Combine like terms: -8y + 8y = 0

2x + 0 = 60 + 8y

2x = 60 + 8y

Divide each side by '2'.

x = 30 + 4y

Simplifying

x = 30 + 4y

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