chilanka chilanka

03-02-2019
Mathematics

contestada

Solve for x and y: 217x + 131y = 913; 131x + 217y = 827

Respuesta :

mathecoach mathecoach

03-02-2019

Answer:

217x + 131y = 913

131x + 217y = 827

131*I - 217*II

131*(217x + 131y) - 217*(131x + 217y) = 131*913 - 217*827

28427·x + 17161·y - 28427·x - 47089·y = -59856

- 29928·y = -59856

y = 2

217x + 131*2 = 913 --> x = 3

Answer Link

Otras preguntas

Write the phrase as a rate in simplest form. 320miles on 34gallons

Let w=width and 4 + w= a rectangle is 4 more than the width. a rectangle is 60 square yards. ngth of the rectangle? Which equation represents unctuation? W[4 +W

the equation 3-x=13 has the solution ... ?

Please help. It due in less than an hour.

1) A bacterial cell is viewed under a microscope. It doubles every 20 seconds. Which method of reproduction is most likely being viewed? A) Binary fission B) Co

A friend was just promoted to a new job that requires part-time travel, and he has also been promised a new laptop after his first month with the company. He ne

The nearest ten 1202(38)

You are driving in the right lane of an expressway and are approaching a ramp where traffic is entering the expressway. You should

Please answer this correctly

Jenna constructs the model to represent 3x2 + 11x – 4. What factors does Jenna need to model for the sides? (3x + 1) and (x – 4) (3x – 1) and (x + 4) (3x – 2