kcaesar2323 kcaesar2323
  • 03-11-2021
  • Mathematics
contestada

solve the following system of equation 5x + 4y = -4 and 3x + 4y =12

Respuesta :

ridmitharuka
ridmitharuka ridmitharuka
  • 03-11-2021

Answer:

x=-8  y=9

Step-by-step explanation:

5x + 4y = -4----(1)

3x + 4y =12-----(2)

(2)-(1)

(3x+4y)-(5x+4y)=12-(-4)

3x+4y-5x-4y=12+4

-2x=16

x=16/-2

x=-8

substitute in (1)

5(-8)+4y=-4

-40+4y=-4

4y=-4+40

4y=36

y=36/4

y=9

Answer Link

Otras preguntas

Why is Periodization challenging yet important in a study of World History?
A poets attitude toward his or her poems subject is referred to as the
A ______  solution is a solution with as much dissolved solute as it can hold at a given temperature
Which process results in the production of ammonia? A nitrification B de-nitrication C nitrogen fixation D nitrogen uptake
HELP if f(x)=6x-4, then f^-1(x)=
what is the square root of -1?
As a person receives more of a good, the _______________ from each additional unit of the good declines.
Based on sociologist robert merton's typology of prejudice and discrimination, _____ may have no personal prejudice but still engage in discriminatory behavior
Please help my with this question
SOMEONE PLEASE HELP ME WITH MATH! WILL GIVE BRAINLIEST TO FIRST PERSON WHO ANSWERS!! Solve each system by substitution. 1. -5x-8y=9 y= -3. 2. y= -3x -6x-