casandraserrat8853 casandraserrat8853
  • 14-01-2019
  • Mathematics
contestada

Eighth grade AA.8 Solve a system of equations using substitution clouds Solve using substitution. 4x + 7y = 9 y = 3 ( , ) Submit

Respuesta :

tramserran
tramserran tramserran
  • 14-01-2019

Answer:  (-3, 3)

Step-by-step explanation:

4x + 7y = 9

y = 3


Replace "y" with "3" in the first equation to solve for x:

4x + 7(3) = 9

4x + 21 = 9

4x         = -12       subtracted 21 from both sides

 x         = -3          divided both sides by 4


Answer Link

Otras preguntas

Which factor contributed to the collapse of both the Roman Empire and the Han dynasty? A. Overfarming and urbanization depleted the natural resources of both re
The square root of 1 less than twice a number is equal to 2 less than the number.Find the number.
I need to write a thesis statement statement for this essay here's what it's about I need to compare and contrast Sumer, Egypt, China and the Indus Valley river
how are the sentence patterns for asking questions different from the sentence patterns for making statements? A. questions usually start with a helping verb o
K is the midpoint of . if = 3x + 1 and     , find the length of
what is reasonable domain
Help with math problem
explain what is meant by 'root cells are hairy'
If you can now move 2 matches, what is the biggest possible number 508
in which stage of the cell cycle does the nuclear membrane and nucleolus form