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

Carter delivers a free community newspaper to each home in a smal suburb. Each street has the same number of houses. Write a formula that helps carter determine

Evaluate. Thanks in advance for your help!

Explain why intensity level is an important factor in your workouts.

The new constitution has put at rest forever all the agitating questions relating to our peculiar institutions--african slavery as it exists among us--the prope

What are pebbles called that have been shaped and polished by the wind?

Which screening is used to test for autism? A.Behavioral B.X-ray C.BMI D.Blood test

Marcus has a rope that was 75 feet long. He cut off part of the rope. After that the rope was 56 feet long. If f= the number of feet marcus cut off the rope, wh

If f(x) = x^2 + x, find f(-3)

Charles is walking around a fountain that has a circumference of 124 feet. What is the diameter of the fountain?

In geometry, what might be the consequences of the inaccuracy?