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

Can somebody help me please!!
The main inhibitory neurotransmitter in the nervous system is.
Hi there I need help and thx How many kilobytes are in 100 gigabytes
4 times the sum of 34 and 19
Which expression is equivalent to 2(x+7)−18x+45 ?
Graph the solution to this inequality on the number line. 3/5 z > 3/4
Lindsay has to read a 72-page book in 6 days. If she reads an equal number of pages each day, how many pages will Lindsay need to read each day to complete the
how do you convert 1/50 to time​
write an equation in slope intercept form for the line that passes through (5,-1) (6,-1)
can you please help me!