tannn0110 tannn0110

07-09-2021
Mathematics

contestada

2x-3y=-1
3x-4y=-1
giải hpt

Respuesta :

anasweeney43 anasweeney43

07-09-2021

Answer:

x = 1

Y = 1

Step-by-step explanation:

A. 3(2x-3y= - 1)

6x-9y=- 3

B. -2(3x-4y= - 1)

- 6x+8y=2

Add both equations:

(6x-9y= - 3) + (- 6x+8y=2)

-y= - 1

3x - 4(1) = - 1

3x-4= - 1

3x = 4 - 1

= 3/3 = 1

Answer Link

Otras preguntas

solving liner system, substitution method 2x-y=23 x-9=-3

An airplane flew for 6 hours with a 22-km/h tail wind. The return flight against the same wind took 8 hours. Find the speed of the plane in still air

Sally is $3.95 in dimes and quarters that shows the total 23 coins how many times does she have and how many quarters does she have

In circle X chords AB and CD are congruent and AB is 9 units from X. Find the distance from CD to X. I need help with the steps I have no idea of how to do it.

five eighths of a pound is how many ounces?

Have this question I'm stuck on for homework. One full orbit of an object around another object is called a _____.

What is square root of 76 approximated to the nearest tenth? Is it 8?

What is a polynomial with 4 terms called?

What is the product in lowest terms? -5/12* 8/13 A. -20/39 B.-10/39 C. -5/39 D.3/25

what is the difference between the speaker of the house and the president pro tempore