hiitscailey
hiitscailey hiitscailey
  • 26-05-2017
  • Mathematics
contestada

7x+2y=-48, I have to solve for either x or y. Then, I have to solve -7x+y=60 for the remainding variable, someone help!

Respuesta :

srnicklaus srnicklaus
  • 26-05-2017
7x+2y=-48 subtract one the one equation from the other to cancel out a variable
-7x+y=60
________
3y=12        divide by 3
y=4            put in y for an equation

-7x + 4=60 subtract 4
-7x=56 divide by -7
x=-8

so, your answer is...x=-8 and y=4

Answer Link

Otras preguntas

If Point M has a coordinate of -1 and MN = 7, what are the possible coordinates of point N?​
When the bear appeared again what did Cole decide to make?
Unlike the Phoenicians, the Assyrians were farmers who invented irrigation. seafarers who traded with distant lands. conquerors who valued military force. schol
Please help me ! Due
. What SAT score would place a student in the same percentile as a student who scored 15.8 on the ACT in 2010? (In other words, what SAT score is "equivalent" t
please explain the interactions and interdependence of organisms within a biosphere. please provide me with a different example on these interactions and interd
Plz plz plz plz plz plz helppppo
The grocery store charges $10.35 for 5 bags of oranges.If someone bought 9 bags of oranges,how much would it cost then
What was the date of the Oklahoma City bombing
What is produced during the Krebs cycle? (