machouse06
machouse06 machouse06
  • 26-01-2021
  • Mathematics
contestada

show all your steps to your answer. 9x +6y = 78
3х - 6y = -30

Respuesta :

graciejacobus117
graciejacobus117 graciejacobus117
  • 26-01-2021

Answer:

x=4

Step-by-step explanation:

You put 9x+6y=78 over 3x-6y=-30. Then, you are going to add the two equations. So, you are going to do 9x+3x, 6y-6y (since the second 6 is negative, it ends up subtracting), and 78-30. You will end up canceling the 6y's, and end up with 12x=48. Then, you will divide 48 by 12, and get x=4. Hope this helped:)

Answer Link

Otras preguntas

help geometry....................
Which diagram shows the correct solution for 420 divided by 15 = ?
Which word correctly completes the sentence? During March that __________ summer schedule is announced. A. theaters' B. theaters C. theater's
__________ is the drug administration method with the highest risk of transmitting diseases such as hepatitis and AIDS.
Please help me on all of these will give brainliest
what can get 104 that uses only the numbers 2,3,5, and 8?
where are landforms with names?
The science that examines how humans interact with their environment is known as environmental science? True False
Tritium (half life =12.3 y) is used to verify the age of expensive brandies. If an old brandy contains 1/16 of the tritium present in the new brandy, then how
Why are political parties considered an important part of a democratic political system? A)They are included in the US Constitution. B)They provide a way to co