caitlinmable
caitlinmable caitlinmable
  • 19-01-2021
  • Mathematics
contestada

how do you solve this equation ?
solving simultaneous equations by substitution
9x - 2y = -1
2y = 3x - 5

Respuesta :

Ritmeks
Ritmeks Ritmeks
  • 24-01-2021

Answer:

x= -1

y= -4

Step-by-step explanation:

9x-2y= -1.........equation 1

2y= 3x-5..........equation 2

From equation 2

2y= 3x -5

y= 3x-5/2

Substitute 3x-5/2 for y in equation 1

9x -2(3x-5/2)= -1

9x -(3x-5)= -1

9x -3x+5= -1

6x= -1-5

6x= -6

x= -6/6

x= -1

Substitite -1 for x in equation 2

2y= 3(-1)-5

2y = -3-5

2y = -8

y = -8/2

y= -4

Hence x = -1 and y= -4

Answer Link

Otras preguntas

What is the mass of 1 L of a gas at STP whose molar mass is 254 g/mol? a. 11.3 g b. 25.4 g c. 30.6 g d. 76.5 g e. 254 g Can you please explain with some deta
how do i solve this problem 4s -12 = -5s + 51
what characteristic do most aquatic plants have in common? A) stems with lots of thorns to fight off predator B) Can survive without sunlight C) Can survive wit
I need help with the math question.six more than the product of a Number and three is 30. What is the number?
Identify the joint injury that occurs often form natural wear and tear. a. Dislocation b. Arthritis c. Bursitis d. Bunions
how to graph the equation y=1/4x-6
If you run 6. Miles an hour how long will it take to do 18 miles help quick pls
how did the British navy cause economic hardship for the colonies?
which group had been living in North America for thousands of years when other groups arrived?
What is an equivalent fraction for 4 21/4