ering11906 ering11906
  • 26-03-2020
  • Mathematics
contestada

x + 2 y = 5
y=2x – 15

Respuesta :

ghanami
ghanami ghanami
  • 26-03-2020

Answer:

one solution : (7 ; - 1)

Step-by-step explanation:

hello :

X + 2 y = 5   ...(*)

y=2x – 15...(**)

use(**) put the value of y into (*) :   x+2(2x-15)=5

x+4x-30=5

5x= 35

x=35/5=7

but : y =2x-15

so : y=2(7)-15=-1

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