MyIndia MyIndia

01-06-2017
Mathematics

contestada

solve this equation with substitution method :-
x+5 = 3 (y+5)
x-5 = 7 (y-5)

Respuesta :

nash000 nash000

01-06-2017

From the first equation,
x+5 = 3(y+5)
x = 3y + 15 - 5
Now substitue x in the second equation with (3y +15 - 5).
x-5 = 7(y-5)
(3y+15-5) - 5 = 7(y-5)
3y +5 = 7y - 35
-4y = - 40
y = 10

Since y is 10, and x is (3y +15 - 5),
x = 30 + 15 - 5 = 40

Answer Link

Otras preguntas

There are seven major levels of classification. Kingdom and Phylum are just two of the levels. Which choices are also major levels of classification? Choose

What is the state motto of North Dakota? Please Help

What do you think would have happened if the colonists gave in to the British.

The ratio of dogs to cats at an animal shelter is 3 to 2. How many dogs are at the shelter if there is a total of 30 animals?

Culture is all of the knowledge and values shared by a _____. group of scientists society country

3 rights that slaves had

Two or more elements chemically combined make a?

can someone plz help me with this

Which of the following can be used as lamp oil? carbohydrates lipids nucleic acids proteins

Despite continued efforts for peace in the Arab-Israeli conflict, why was there a continuing struggle in the occupied territories?