meche03 meche03
  • 22-11-2019
  • Mathematics
contestada

Solve the equation 3x + 6y = 18 for x.

Respuesta :

StarGazers
StarGazers StarGazers
  • 22-11-2019

3x + 6y = 18    -6y

3x = 18 - 6y     Divide by 3

3x/3=18/3-6y/3  Simplify

x=6-2y

Now we check by plugging in the value of x.

3(6-2y)+6y=18 simplify

18-6y+6y=18    simplify more

18=18.

NOW we know for sure that this is correct

x=6-2y

Answer Link

Otras preguntas

why its important that skull joints cannot move
Determine whether each equation has the given ordered pair as a solution. y = 5x + 8; (0,8)
berapakah hasil dari 4/2-1/5+2/3=
A true-false test contains 18 questions. In how many different ways can the 18- question test be answered?
What is the solution to the equation 8 - 2b = -2 ___ * (12b + 6) ? 3 b =
The school track team earned $2 for each cap they sold and $5 for each sweatshirt they sold. The total profits were $317. If they sold 1 more of the caps than o
Mary has twice as many pencils as she has pens. Tom borrows a pen. Now, Mary has ten less pens than pencils. How many pencils does Mary does?
Find if f(x) = 3x and g(x) = x + 1.
what are the coordinates Y = 6x +11 2y-4x=14
the perimeter of a triangle is 59 in. The longest side is 11in. longer than the medium side, and the medium side is 3in longer than the shortest side. find the