zadagoatt zadagoatt
  • 16-07-2018
  • Mathematics
contestada

what is the solution to the system of equations

3x+2y=39
5x-y=13

Respuesta :

DeanR
DeanR DeanR
  • 16-07-2018

3x + 2y = 39

5x - y = 13

Multiplying the last by two:

10x - 2y = 26

Adding to the first

13x = 65

x = 5

y = 5x-13 =25-13=12


Check:

3(5)+2(12)=39 good

5(5)-12=13 good


Answer: x=5, y=12


Answer Link
ilovemay2004 ilovemay2004
  • 26-05-2021

Answer:

(5,12)

Step-by-step explanation:

Substitute the value of y

3x+2y=39

y=-13 +5x

Solve the equation

3x + 2(-13+5x)=39

Substitute the value of x

x=5

Solve the equation

y=-13+5x5

y=12

x=5  y=12

(5,12)

Answer Link

Otras preguntas

What is the area of the shaded region
Jeff wants to build a barn that is 50 ] feet long by 204 feet wide. What is the area of the barn in square feet?
An increase of 10% would give workers a salary of $880. What salary would an increase of 20% give?
Angela puts $520 in an account that earns 6% per year. What interest will she get at the end of 1 year?
What is the value of -9r-7 when r=2?
will someone please tell me what I got correct and what I got incorrect
A brown-eyed woman and a blue-eyed man are planning to start a family. The Punnett square shows the possible allele combinations for their children, where brown
Write the inequality shown on the number line.
what is the event expected in women during luteal phase?A. the ovulation phase endsB. the egg moves down the fallopian tube over several daysC. the follicle dev
How did his experiences lead him to want to change the world? Martin king junior