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

THE ANSWERS THAT ARE SHOWN ARE NOT RIGHT Options for the first box- AAA, SAS, SSS, ASA Options for second box- 30, 60, 90 Options for third box- twice, half of,
Which of the following mathematical expressions is written in standard form? A. x < y + 5B. 2x + 3y < 12 C. 2y + 6 > 3xD. 2x + 5 ≤ x - 3y - 7​
what is the central idea of paragraph 5 throughout 8 of "Top spot" use two details from the article to support your response.
The Kelley School is having its annual Holiday Fair. Items are sold for either 25 cents or 50 cents. Each child in our class can spend $2.00 at the fair. Assumi
What is tan(B)? B 5 13 5 12 ? tan(B) = = Enter
What is the place value of 7 in the number 2376400? A.70 B. 700 C 7000 D. 70000 E 700000
please help me on the question​
Can somebody help me pls hurrrry
Two objects are moving downward at a speed of 3 cm/s. Object A has a mass of 2kg and Object B has a mass of 1kg. You want both objects to move to the left at a
two diseases that affect the kidney??​