Ilovebaby Ilovebaby
  • 18-08-2020
  • Mathematics
contestada

solve the system by adding or subtracting
-3x-3y=9
3x+8y=6

Respuesta :

CoalitionStorm
CoalitionStorm CoalitionStorm
  • 18-08-2020

Answer:

x = -6 y = 3

Step-by-step explanation:

Adding the two equations and you get, -3x-3y + 3x+8y= 6+9

=> 5y = 15

=> y = 3

Plug y in each equation

-3x -3(3) = 9

-3x -9 = 9

-3x = 18

x = -6

3x + 8(3) = 6

3x +24 = 6

3x = -18

x = -6

Answer Link

Otras preguntas

Which of the following sets are equal to {x|x < 9 and x> 2} {3,4,5,6,7,8} {2,3,4,5,6,7,8,9} {} {2,3,4,5,6,7}
Answer fast. Which statement is not true? A. All whole numbers and integers are rational numbers. B. All rational numbers can be written as a fraction. C. A who
A spring with spring constant 120 N/m and unstretched length 0.4 m has one end anchored to a wall and a force F is applied to the other end. Required: a. If th
Find mZWVT. T U 7x +11) V (14x+7) (3x + 4)º W A. 40 OB. 53 OC.50 OD. 45
Pepsin and Trypsin are enzymes. At what pH do they have the highest rate of reaction?
Order 0.5, -1/7, -0.2, and 1/3 from least to greatest.
What is the solution to this system of equations? ( __ , __ )
A rectangle has a perimeter of 53 feet and a base of 7.1 feet. What is the height?
Helium is in group 18 of the periodic table. How is helium different from the other elements in this group?(1 point) A _ Helium atoms have a full outer energy l
What is the prime factorization of 81? Enter your answer as a product of prime numbers, like 2 x 3, or as a single prime number, like 17.