issabad21
issabad21 issabad21
  • 07-11-2018
  • Mathematics
contestada

solve the system of linear equations by substitution. x+y=10 2x+y=15

Respuesta :

leannaheath
leannaheath leannaheath
  • 07-11-2018

Answer:

(5, 5)

Step-by-step explanation:

x+y=10        2x+y=15

2x+y=15 - Simplify

2x+x=15 - substitute

3x=15 - divide each side by 3

x=5


x+y=10 - substitute

5+y=10 - subtract 5 from each side

y=5


CHECK (5, 5)

x+y=10        2x+y=15

5+5=10       2(5)+5=15

10=10          10+5=15

10=10          15=15




HAVE A GREAT DAY!!!!!!

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