gavergan
gavergan gavergan
  • 07-01-2019
  • Mathematics
contestada

x=3y+4
3x-5y=8
Solve using substitution

Respuesta :

OmegaAzzy
OmegaAzzy OmegaAzzy
  • 07-01-2019

x = 3y + 4

3x - 5y = 8

Because we have a value for x, we can plug it into the second equation to solve for y.

3(3y + 4) - 5y = 8

9y + 12 - 5y =8

Combine like terms.

4y + 12 = 8

Subtract 12 from both sides.

4y = -4

Divide both sides by 4.

y = -1

Because we have a constant value for y, we can solve for x.

x = 3(-1) + 4

x = -3 + 4

x = 1

The value of x is equal to 1.

The value of y is equal to -1.

Answer Link

Otras preguntas

Factor 12m^2n^2-8mn+1
Always allow _______ to complete a writing project
The 17th Amendment (1913) provided for direct election of U.S. senators. Prior to this, senators were __________. a. elected by party primaries b. chosen by sta
when exercising you should
Always allow _______ to complete a writing project
We stopped AFTER THE GAME at Juan’s favorite restaurant. Identify the phrase in caps. a. adjective phrase b. gerund phrase c. infinitive phrase d. adverb phrase
The guarantees of due process imply a right _____. a.to assemble b. of association c. of privacy d. to vote
Which best completes the sentence? Those muffins in the oven certainly smell __________ . a. good b. well A?
Which answer choice does not contain any punctuation errors? a. You bet they are, Jenna answered. b. "Are otters mammals? Debbie wondered." c. She said "that
what are three ways the Pacific ocean affects the people and economy of Washington?