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

Anything less than ___________ would betray the civil war's meaning, black spokesmen insisted.
Someone answer please!!!! Quick
What is the average speed of an object that moves 100 m in 4 seconds and then remaining at rest for 1 second?​
Enzymes are proteins that speed up chemical reactions in the body. How do they work?
name this compound Ch3ch2ch2cooh​
How do I solve x² + 2x − 8 = 0? explain please/step by step
Help me find the volume please!
What is the least common multiple of the two denominators 6/8 4/32
90% What are the exact solutions of x2 – 5x - 1 = 0? (5 points) x=51 V29 x = 80% 5+29 x = 51 V21 20% x = -51 V21
A particular computer takes 78 nanoseconds to carry out seven sums and ten products. Another computer takes 55 nanoseconds to carry out 4 sums and eight product