MiriA547251 MiriA547251
  • 03-11-2022
  • Mathematics
contestada

Solve the system of equations 4x+6y=−84x+6y=−8 and 2x+y=122x+y=12 by combining the equations.

Solve the system of equations 4x6y84x6y8 and 2xy122xy12 by combining the equations class=

Respuesta :

NooriB711525 NooriB711525
  • 03-11-2022

Given the system of equations:

[tex]\begin{gathered} 4x+6y=-8\ldots(1) \\ 2x+y=12\ldots(2) \end{gathered}[/tex]

Multiply equation (2) with 2.

[tex]4x+2y=24\ldots(3)[/tex]

Subtract (3) from (1) and solve for y.

[tex]\begin{gathered} 4y=-32 \\ y=-\frac{32}{4}=-8 \end{gathered}[/tex]

Substitute the obtained value of y into (2) to find x.

[tex]\begin{gathered} 2x-8=12 \\ 2x=20 \\ x=\frac{20}{2}=10 \end{gathered}[/tex]

The solution of the system of equations is

x = 10, y = -8

Answer Link

Otras preguntas

28 is 12 less than k. Soive for k.
Tanya smokes 5 cigarettes a day. How much does she spend on cigarettes in a week?
A bookshop sets the marked price of the book 25% higher than its cost, and then sold it at 10% discountIf the selling price of the book is $360, find the cost o
Some would say that if it is not in the report then it did not happen. What does this comment mean? How might you address a situation in which you were called t
Music lessons cost 45 dollars per hour. Evaluate 6 hours
HELP ME WITH THIS DRIVERS ED QUESTION!!!
Which sequence shows the numbers in order from least to greatest
Lines AB and CD intersect at E. If m
Whitch number sentence is true plz AWNSER quickly
For each hypothesis, write a counterexample to disprove the hypothesis,1.5) Most 9th-grade students' favorite meal is pizza.I don't understand what the question