sesylara1109 sesylara1109
  • 03-12-2018
  • Mathematics
contestada

Use substitution to solve this system of the equations 2x-3y=-1 y=x-1

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 03-12-2018

Answer:

(x, y) = (4, 3)

Step-by-step explanation:

The second equation gives an expression for y that can be substituted into the first equation.

... 2x -3(x -1) = -1 . . . . put x-1 where y was

... -x +3 = -1  . . . . . . . simplify

... 4 = x . . . . . . . . . . . add x+1

Using that second equation, we can find y to be ...

... y = 4 -1 = 3

The solution is (x, y) = (4, 3).

Answer Link

Otras preguntas

If every positive number has two square roots and you can find the length of the side of a square window by finding a square root of the area, why is there only
1/7(x+21)=-6 answer ?
how to Express each decimal as a fraction or a mixed number in a simplest form ? I need help with -0.14
Solve the equation x=x+3
Containment was a policy in which the U.S. tried to do what?
What is a scale on a map?
A box is lowered using a rope. If the acceleration of the box, is 2.5 m/s2 (downward) and the tension in the rope is 31 N, what is the mass of the box (in kg)?
2h/3-1/4=1/3 solve and show your steps
a square photo-display board is made up of 60 rows of 60 photos each.The area of each square photo is 4 square inches.How long is each side of the display board
Explain how you would use a number line to find 6+(-8)