abrianamgarciap0vac2 abrianamgarciap0vac2
  • 01-03-2021
  • Mathematics
contestada

-4x-2y=-10
3x+y=4
Using substitution

Respuesta :

xsn1per
xsn1per xsn1per
  • 01-03-2021

Let get x from the first equation

-4x=+2y-10

x=-1/2y + 5/2

Now substitute the x in the second equation

3(-1/2y+5/2)+y=4

-3/2y + 15/2 + y =4

Move the terms without the y to the other side

-3/2y + y = -15/2 +4

Now multiple both side by 2

-3y +2y = -15+8

-y = -7

Y = 7 (ANSWER)

Now we substitute the y in the first equation so we can get the x

x = -1/2 (7) + 5/2

x = -7/2 + 5/2

x = -2/2

X = -1 (SECOND ANSWER)

Answer Link

Otras preguntas

I need help -7y^2-2y^2+y^3-3y-2y+5y^3-2y
If a computer prints 8.8 lines in 4 seconds how many lines can it print per minutes
Help me plz....................
Please help me with this
For what values of x is the absolute value of x less than or equal to 1.5? (Hint: Substitute numbers into the inequality |x| ≤ 1.5 and see which numbers make th
SOLVE: 3X+1 PLZZ SOLVE
Explain why your goal is smart.use smart to adapt/change your goal.​
: Identification of the Uses of Media​
Q4 lodine and chlorine react together to form a compound with the formula ICI. lodine and chlorine do not form ionic bonds with each other in iodine chloride. E
Help me, give me a question about this paragraph. 4. Race Racial structural inequality has its roots in U.S. slavery. That system legally allowed Black American