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

Cellular respiration involves a series of chemical reactions. Which of the following is a primary way that enzymes affect these reactions? A. They decrease the

Why might nations join together to remove trade barriers?

How did the Romans rule differently from the Etruscans?

What is NAFTA? What countries are involved?

How many corners are in a rectangle and how many flat faces

Why didn't the first stars to form have solar systems with Earth like planets and satellites?

A basketball has been left out in the cold. The next day you find that it has become soft. What do you do to get it back to shape and why?a) Leave it alone to w

a rectangular field with a area of 8000m2 is enclosed by 400m of fencing. determine dimensions to nearest tenth of a metre

what were the main ideas of the reformation?

In scienceclass the teacher measured 800 milligramns of an chemical.How manyn grams is it.