greenlollipop3
greenlollipop3 greenlollipop3
  • 20-11-2018
  • Mathematics
contestada




PLEASE HELP!!!


Solve.



a - 2b = 2
a + b = 2 ( b + 3 )

Respuesta :

beyondcrazz
beyondcrazz beyondcrazz
  • 20-11-2018

a-2b=2.........(1)

a+b=2(b+3)

a+b=2b+6

a-b=6.......(2)  

a-2b= 2

a-b= 6

Eliminate y  

multiply (1)by -1  

Multiply (2) by 2  

-a+2b=-2

2a-2b=12

Add the two equations  

a = 10

plug value of a in (1)  

1a +-2b=2

10+-2b=2

-2b =2

-2b =-8

b=4.00

Hope this helped:)




Answer Link

Otras preguntas

Mike owes his friends $7  he got his weekly allowance of $20 paid back his friend and downloaded a nine dollar album how much money does he have left
Which expressions are equivalent to the slope of the line below? ->
I am my ….assignment right now. write writing wrote
Why do you think African societies placed such high importance on art?
Match each term with the phrase that best defines it. compulsory negotiations between workers and employers collective bargaining mandatory, required strike the
How would you make the following compounds from N-benzylbenzamide? a)dibenzylamine b)benzoic acid c)benzyl alcohol
una crayola rosado se hace con 12 ml de cera roja por cada 6ml de cera blanca. ¿cual de los siguientes mezclas crean el mismo tono de color rosado​
Help me solve this problem for algebra 2
The US government encourage American industry in the late nineteenth century by creating protective tariffs." True or false
why are penicillins often more effective against gram-positive bacteria than gram-negative bacteria?