25middletonca
25middletonca 25middletonca
  • 11-11-2020
  • Mathematics
contestada

Y=2x+6
3y-x+3=0

Substitute to solve

Brainliest for correct answer

Respuesta :

keziakh004
keziakh004 keziakh004
  • 11-11-2020

Answer:

-21/5 or -4.2

Step-by-step explanation:

y = 2x + 6

3y - x + 3 = 0

Substitute the value for y from the first equation into the second equation.  Solve for x.

3y - x + 3 = 0

3(2x + 6) - x  + 3= 0

6x + 18 - x + 3 = 0

5x + 18 + 3 = 0

5x + 21 = 0

5x + 21 - 21 = 0 - 21

5x = -21

x = -21/5 or -4.2

Answer Link

Otras preguntas

What proportion of the first 10,000 natural numbers contain a 3
How many ways can you choose a set of 9 pencils from a selection of 10?
angie has 12 feet if string.She will cut the string into equal lengths of 5 inches each.How much string will be left after she cuts as many of these lengths as
Abc is a triangle, ac=19cm bc=17cm and angle bac=60 degrees. calculate the size of angle abc? answer
what does it mean to have a 'golden touch'?
let A={0,1,2,3,4,6} and B={2,4,6,8} find a.)AnB             b.)AUB
During an experiment, which factors are observed and measured ?????
what is an intentional fallacy?
how to change 50/12 to a mixed number?
Is it possible to make CD without plastic? why or why not?