nessab nessab
  • 02-05-2020
  • Mathematics
contestada

WILL GIVE BRAINLIEST. If x+y=3 and 3x+5y=13, then x-y is equal to?

Respuesta :

TheNoobXD
TheNoobXD TheNoobXD
  • 02-05-2020

Answer:

(1,2)

y=2

x=1

Step-by-step explanation:

x+y=3

3x+5y=13

solve the equation

x=3-y

3x+5y=13

substitute the value of x into an equation

3(3-y)+5y=13

distribute

9-3y+5y=13

add -3y to 5y

9+2y=13

subtract 9 from both sides

2y=4

divide both sides by 2

y=2

substitute the value of y into an equation

x=3-2

subtract 3 to 2

x=1

--------

(1,2)

--------

Answer Link

Otras preguntas

If (x − 2)^2=49, then x could be ?
write a paragraph for me using these words: art critic and art historian
a rectangular field with a area of 8000m2 is enclosed by 400m of fencing. determine dimensions to nearest tenth of a metre
In scienceclass the teacher measured 800 milligramns of an chemical.How manyn grams is it.
what were the main ideas of the reformation?
You hear a thunder 3 seconds after you see lightning. How far away is the storm?
Why did the settlers go to new mexico during manifest destiny?
What is NAFTA? What countries are involved?
How do I solve this equation? If 3t-7=5t then 6t=a 21b-7c-21d-42
Which of the following factors does not favor a change in gene frequency and, therefore, evolution? (A) large populations (B) mutations (C) emigration (D) genet