brejo821 brejo821
  • 11-03-2021
  • Mathematics
contestada


x + 5y =20
2x - 7y = 9

Respuesta :

mumsy
mumsy mumsy
  • 11-03-2021

Answer:

Step-by-step explanation:

will multiply the first equation with -2

-2x-10y=-40

i will add it now to the second equation

-2x-10y=-40

 2x-7y=9

-17y=-31

y=31/17

and x=185/17

Answer Link

Otras preguntas

PLS HELP ME UNDERSTAND THE CONCEPT
PLEASE DO THE BEST YOU CAN ON THIS PROBLEM & PLEASE SHOW YOUR WORK: m+3>4
what is the height h of the parallelogram
Help please i really need it
Our bodies need the equivalent of how many eight-ounce glasses of water per day?
Vaporization is an endothermic process. Using the terms 'kinetic energy' and 'intermolecular forces', explain how the addition of energy can cause a liquid to v
How many real solutions does this 2x^2-5x+3=0
What conclusion can you draw from the title the day before mount ruapehu erupted? 1-mount ruapehu is a volcano 2- mount ruapehu is in New Zealand 3- mount ru
Which best explains why Christians living in Sudan continue to face oppression? A) The government of Islamic Sudan is strictly implementing the policy of one
When did christian churches accept the pill?