Melony Melony
  • 23-02-2015
  • Mathematics
contestada

What is the solution to the system of equations?

4x + y = 2
x - y = 3


( ______ , ______ )

Respuesta :

subediprashant
subediprashant subediprashant
  • 24-02-2015
4x + y = 2
x - y = 3       ⇒       x = 3 + y

4 (3+ y) + y = 2
12  + 4y + y = 2
12 + 5y = 2
5y = 2- 12
5y = -10
y = -10/ 5
y = -2

x = 3 + y   ⇒ 3 + (-2)      ⇒   3 - 2  = 1

(1, -2)

Answer Link

Otras preguntas

Evaluate each expression for a = -2,b = -4.1, and c = 5.-c + b – a
What is the relationship between glucose and glycogen
8 (4p + 1) = 32p +8help....again
Four friends buy 36 cookies for 12$.Each person contributes the following amount of money. friend#1-$2 friend#2-$3 friend#3-$4 freind#4-$3 Each person gets the
How do I simplify 16/10 what my answer
Is the fraction 36/9 considered a whole number and counting number?
Two children share out 96 sweets into piles in the ratio 5:7 calculate how many sweets are in the small pile.
2/5h - 7 = 12/5h - 2h +3
Evaluate each expression for a = -2,b = -4.1, and c = 5.-c + b – a
What is 1.75rounded to the nearest cent mathematics