marcosolis773
marcosolis773 marcosolis773
  • 23-02-2017
  • Mathematics
contestada

Solve equation by the addition method

X+3y=15,-8x+3y=-12

Respuesta :

dblackja68
dblackja68 dblackja68
  • 23-02-2017
x+3y=15
x=15
3y=15
3y/3=15/3
x=5
-8x+3y=-12
-8x=-12
-8x/-8=-12/-8
x=12/8 or 3/2
3y=-12
3y/3=-12/3
y=-4
i'm not sure if that it
Answer Link

Otras preguntas

Could someone help me please
The points (-3, 5) and (3,5) are two verticles of a square. list all other order pairs that could be the other two verticles of the square.
Identify each highlighted example from Helen Keller's memoir as a simile or a metaphor_ "I felt as if invisible hands were holding me, and I made frantic effort
Which of the following best describes SO ? HELPPP ASAP PLS
Which statement correctly describes a feature of the rock cycle? Rocks are preserved through the process. Rocks change from one type to another. Different rock
1. Identify the region of the state that you live in and how the geographic features or resources of your region impact the role your region plays in Washington
what is the mean of this set {6,7,9,9,9}​
Please help! Sarah’s dogs: Create frequency tables to represent the morning and afternoon dogs as two sets of data. Group the weights into classes that range 10
Given f(x) and g(x) = f(x + k), use the graph to determine the value of K
Help please I really need help​