lupemoran2013 lupemoran2013
  • 18-01-2020
  • Mathematics
contestada

-7x-3y=-20
3x + 6y=-15
Find the solution of the system of equations

Respuesta :

ab68 ab68
  • 18-01-2020
Solution = (5,-5)



Step-by-step: for substitution


Isolate the x in 3x+6y=-15


===> x=-2y-5

Substitute the x in -7x-3y=-20 for -2y-5.


-7(-2y-5)-3y=-20

14y+35-3y=-20

11y=-55

Y=-5



Substitute the y in 3x+6y=-15 for -5


3x+6(-5)=-15

3x-30=-15

3x=15

X=5


(5,-5)
Answer Link

Otras preguntas

the original price of a jacket is $68 the sale price is 30% off the original price what is the discount amount off the original price.
A(n) ____ liar is unable to tell the truth even when he or she wants to. a. placating b. apathetic c. misogynistic d. pathological
What do people “bob” for on Halloween?
Russian Cossacks can be compared to A. North American westward settlers. B. Japanese serfs. C. African slaves. D. Chinese peasants.
Why is external criticism so important when it comes to analyzing data?
10*80+(609-78)-10^2 help pls
Why was England irritated with New Netherland?
All of the following are found in a chloroplast except
Since September, Mrs. Bishop has written a check for $178.23 and made a deposit of $363.82. Her balance was $660.00. Which amount should Mrs. Bishop's checkbook
what is 0.689 in word form