jadynbluec
jadynbluec jadynbluec
  • 31-03-2020
  • Mathematics
contestada

HELP!!

Solve the system using addition.
7 x plus 2 y
equals
negative 13
negative 7 x plus y
equals
25

Respuesta :

lois29powell
lois29powell lois29powell
  • 31-03-2020

Answer:

y=4. x=-3

Step-by-step explanation:

7x+2y=-13. add or minus each other

+ -7x+y=25

3y=12. solve it to get y=4( divide by 3 on both sides)

knowing that y is 4, solve one of the equations

-7x+4=25. -4 on both sides

-7x=21. divide by -7x on both sides

x=-3

therefore y=4 and X=-3

Answer Link

Otras preguntas

Order the words because /I/ to / when/I/a/I/ for / couldn't / had / student / study/my/work/ was / exams
Le cinéaste ________. A. dirige son équipe technique et les acteurs B. manie la caméra lors du tournage C. écrit le scénario et les dialogues D. fait l'enregist
If a rock weighs 3.24 pounds on Saturn, what will it weigh on Earth?
Which of Congress's powers is implied through the necessary and proper clause?
Who gives it value to a dollar bill and why?
Real world scenario: cancer prevention
GEOMETRY - triangle similarity
Nick is curious about which cell phone provider is most used by his neighbors. He asks several neighbors about their provider and draws a conclusion based on th
writing an argumentative essay about Sol Painting An Introduction (with a hook, brief summary of the story and a thesis statement that states your argument as t
1 Mrs. Tremont has several ______ who love her science class. A) students 2 Several of her _____ projects won ribbons at the science fair. B) students' 3 One