Register

Selesaikan persamaan linear serentak berikut. 2x + y = -5 3x - 4y = 9

Selesaikan persamaan linear serentak berikut. 2x + y = -5 3x - 4y = 9
155k views
2 votes
Selesaikan persamaan linear serentak berikut.
2x + y = -5
3x - 4y = 9

User Costi
by
7.4k points

1 Answer

2 votes

Answer:

(-1;-3)

Explanation:


\left \{ {{4(2x+y)=4*(-5)} \atop {3x-4y=9}} \right. \ => \ \left \{ {{8x+4y=-20} \atop {3x-4y=9}} \right. \ => \ \left \{ {{11x=-11} \atop {2x+y=-5}} \right. \ => \ \left \{ {{x=-1} \atop {y=-3}} \right.

User Darrel Miller
by
8.1k points
← Prev Question Next Question →

Related questions

User Pratik Charwad
asked Mar 23, 2020 112k views
Selesaikan setiap persamaan liner yang berikut. 1. x+5=2x-1 = 2. 3x. +8=7x-2= ​
Pratik Charwad asked Mar 23, 2020
by Pratik Charwad
8.9k points
1 answer
5 votes
112k views
User Rikkit
asked Feb 12, 2022 131k views
Selesaikan soalan berikut 4^2 - \sqrt - 64 / ( - 2)^2 ​
Rikkit asked Feb 12, 2022
by Rikkit
7.5k points
1 answer
4 votes
131k views
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories

Other Questions

What is .725 as a fraction
How do you estimate of 4 5/8 X 1/3
A bathtub is being filled with water. After 3 minutes 4/5 of the tub is full. Assuming the rate is constant, how much longer will it take to fill the tub?
Link Copied!