thenaivecube
thenaivecube thenaivecube
  • 03-06-2018
  • Mathematics
contestada

Solve: 2x-3y=21 and -6x+2y=7 PLEASE HELP

Respuesta :

musicnotesloves
musicnotesloves musicnotesloves
  • 03-06-2018
the first one is : x=3/2y+21/2
the second one is: 
x=1/3y+−7/6
Answer Link
vidalmari6p99qfk
vidalmari6p99qfk vidalmari6p99qfk
  • 03-06-2018

y= 10  

2x-3y=21

2x=21+3y

x= (21/2 +3/2 y)


-6(21/2+3/2y)+2y=7

126/2+18/2y+2y=7


    sorry I need to leave now

      




Answer Link

Otras preguntas

During the middle school years, a child's self-concept:
PLEASE HELP MEEE! The perimeter of a triangle is 7a - 11b. If two of its sides are 2a + b and a - 9b, what is the third side?
What is the solution to the equation? 1-z/5=9
Read this excerpt from "A Modest Proposal" by Jonathan Swift: Infant's flesh will be in season throughout the year, but more plentiful in March, and a little be
Rosalind Franklin is famous for which contribution to the study of DNA?
What are the possible effects of a frontal system entering an area? Select all that apply. A. gentle rainB.sea breezeC.clearing skiesD.thunderstormsE.a change i
At 16 juana is at an appropriate weight. and likes to eat whatever she wants to whats the best strategy to ensure juannas health?
as the moon changes appearance during the month, it follows a pattern. describe the pattern.
The circuit element whose purpose is to convert electrical energy into another form of energy is the _____.
Which organ receives only sympathetic innervation?