Byuwtipolkyle Byuwtipolkyle

22-01-2017
Mathematics

contestada

Solving system of equation using substitution?

-3x - 8y = 20
-5x + y = 19

Respuesta :

sciencific sciencific

22-01-2017

multiple second equation by 8
-3x-8y=20
-40x+8y=152
sum 2 equations:
-43x+0=172
x=172/-43
x=-4
put x in one of the equations

-3×-4-8y=20
12-8y=20
-8y=20-12
-8y=8
y=-1

Answer Link

Otras preguntas

i been stuck for 2 days..

Help pls and provide an explanation

what is the square root of 9881672627?

what is the theme of the quote "Even in this gloom hope gleams again.... The accursed darkness itself has been a cloak to us."

Matthew 13:1-9 and Luke 8:5-15 Similarities Differences And Matthew 6:24and Luke 16:13 Similarities Differences

Pues yo ____________ (Preferir) buscar un vestido nuevo y zapatos.

9 These notable additions to the fundamental law were welcomed by the friends of liberty throughout the world. They removed the race line from our governmental

Find the solution or x

I looked at my partner, first with suspicion, and then with a vast relief. (a) Who is the speaker? Who is his/her partner? (b) Why did the speaker look at his p

Solve for k. 6k = 49.2