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

why a flat surface of a rectangular prism called faces?
How do you pronounce the letter "X" in Spanish?
At the concession stand of a school foot ball game, sandwiches cost $1.50 and a bottle of water costs $.90. The school sells 40 sandwiches and 80 bottles of wat
what planet starts with e?
What metric unit should i use to measure the mass of a monkey
THE EXPRESSION (TAN THETA) (CSC THETA) IS EQUAL TO?
when gravity causes a huge amounts of rock or soil to be carried down a slope this form of erosion is referred to as a
names is often given to the journey of africans who were brought to the americas as slaves?
does a solution have to involve a liquid? explain.
The shape of the clock is a regular dodecagon with a radius of 14cm. Centered on the clock's face is a green circle of radius 9cm. If the region outside the cir