TheGirlWhoNeedsHelp TheGirlWhoNeedsHelp
  • 10-11-2016
  • Mathematics
contestada

can you help me? this is systems with elimination

can you help me this is systems with elimination class=

Respuesta :

emjaya
emjaya emjaya
  • 10-11-2016
If you add each like term together (so -6x + 6x, 5y + 4y, and 1 + -10)
You do this you end up with
0 + 9y = -9
9y = -9
y = -9/9
y = -1
Then substitute it back in to one of the tw equations:
6x + 4(-1) = -10
6x + -4 = -10
6x = -10 +4
6x = -6
x = -6/6
x = -1
Answer Link

Otras preguntas

Express the set in roster form.{x|x is an integer greater than -6}
Factor the following and find the zeros.1. x2 - 169 = 0                2. x2 + 14X + 49 = 03. x2 - 17x + 42 = 0        4. 2X2 - 9X - 5 = 05. 3X2 + 11X - 4 =0
What is aerobic and anaerobic respiration ?
What is £300 divided into a ratio of 3:7
I got 60 right out of 110 questions on a test. What was my overall grade/percentage?
How would you round off a number to one decimal place? For example would 67.39 become 67.4
what is a example of democracy?
My neighbour has lived all over the world. I asked how old are you? He said " I lived 1/4 of my life in China, 1/6 of my life in Vietnam, 1/2 of my life in Camb
what does 'case by case' mean?
could you tell me what is a genre?