tayaross99 tayaross99
  • 03-05-2021
  • Mathematics
contestada

Solve the simultaneous equations 2x+3y=9 4x+y=13

Respuesta :

drmallery drmallery
  • 03-05-2021

Answer:

x=3, y=1

Step-by-step explanation:

2x+3y=9. Equation 1

4x+y=13   Equation 2

y=13-4x.  Modify equation 2 to isolate y

2x+3(13-4x)=9 subst value of y of equation 2 into equation 1

2x+39-12x=9 solve equation

-10x+39=9

-10x=-30

x=3

solve for y

2x+3y=9

2(3)+3y=9

6+3y=9

3y=3

y=1

Check answer:

4x+y=13

4(3)+1=13

13=13

Answer Link

Otras preguntas

What happened in 1776
A seahorse swims at a rate of 32.1 feet per hour. convert this speed to inches per minute
Solve the following system of linear equation using any algebraic method. If possible, check your solution. 2x-5y=3 X-2y=7
this two different two different ways to find the value of the expression 5.4 * 117 * 100 that do not require you to First multiply 5.4 X 1.17.
- solving systems algebraically -a boat traveled 115 miles each way Downstream and back. the trip Downstream took 5 hours.the trip back to 23 hours. what is the
In which province is welkom
Is a substance that a filter can seperate into two parts a mixture or a pure substance?
when evaluating a source, what questions should you ask about the publisher
what is the width of a rectangle with the area of 5/8in2 and the length of 10inches
I half 49 kromozone. Pls help with math?