maryfitzgerald2019
maryfitzgerald2019 maryfitzgerald2019
  • 03-02-2017
  • Mathematics
contestada

3x + 3y = –9
3x – 3y = 21

Respuesta :

yashddsy26
yashddsy26 yashddsy26
  • 03-02-2017
so solving by addition !

6x= 12
x= 2

and y = -5
Answer Link
juanny1818
juanny1818 juanny1818
  • 03-02-2017
3x+3y=-9
Add -3y to both sides.3x+3y+−3y=−9+−3y3x=−3y−9
you can divide
3x/3= -3y-9/3
 x= -y-3

3x-3y=21
x=y+7


Answer Link

Otras preguntas

Consider the following hypothesis test H0 p 20 Ha p 20 A sample of 400 provided a sample proportion p 175 a Compute the value of the test statistic to 2 decimal
What Force would be needed to extend a spring with a spring constant k=7 N/m that extends0.3m?​
Piaget suggested that, in some cases, two children of the same age may be at different skill levels in a specific domain of cognitive ability. This claim makes
what is a complex number?????
what are the two ancient cultures that thrived in Mexico?​
In order to ensure the success of his plan, Montresor
Please be quick! I need this as soon as possible!
Which of the following groups of foods will best build muscle and provide energy? A) Oatmeal, potatoes, fruits, and berries Chicken, B) nuts, dried beans, and
how was Darwinism generally and eugenics specifiacalu used to impact america's immigration policies?
A series of events that gets the computer ready for work is known as what?