14-08-2017
Mathematics

contestada

How can I solve this system of equations: x-y=-3 and -5x-2y=1

Respuesta :

choixongdong choixongdong

14-08-2017

x-y=-3 so y = x + 3
-5x-2y=1
substitute y = x + 3 into -5x-2y=1
-5x - 2y = 1
-5x - 2(x + 3) = 1
-5x - 2x - 6 = 1
-7x= 7
x = -1

y = x + 3 = -1 + 3 = 2

answer
(-1, 2)

Answer Link

Otras preguntas

x+y=0 and x-y=10 solve by substitution.. How do I figure out the problem!

Which of the following is not considered to be an ethnic group? a. African-American c. Jewish b. German d. Mongoloid

which type of speech is most likely to employ idealism?

Canned beans are on sale at a price of 5 cans for $3, which means each can will cost _ 3 5 of a dollar. Your club needs 35 cans of beans for a large chili dinne

If Paris has 18 cups of pretzels how many cups of nuts does she need

Andrew Jackson was very popular when he was elected in 1828, but he made many controversial decisions during his presidency. Which of the following has Andrew J

which type of speech is most likely to employ idealism?

What is 15%off of $3.00

I don't know how to graph this inequality y<-3x

What new social classes emerged due to advancements in agriculture? A. Artisans, laborers, and merchants B. Merchants, Farmers, Plumbers C. Farmers, Warriors, a