erinveri100 erinveri100
  • 02-02-2021
  • Mathematics
contestada

Solve the simultaneous equations
8x + 3y = 45
2x + 3y = 27

Respuesta :

kirabowen15
kirabowen15 kirabowen15
  • 02-02-2021

8x + 3y = 45 * -2
2x + 3y = 27 * 8

-16x - 6y = 90
16x + 24y = 216

24y = 216
y = 216/24
y = 9


8x + 3y = 45
8x + 3(9) = 45

8x + 27 = 45
8x = 45 - 27
8x = 18
x = 18/8
x = 2.25


Answer Link

Otras preguntas

What is the median of 48, 46, 52, 57, 58, 52, 61, 56?
Which group 2A element has the largest ionic radius?
What does escalate mean
Under Marxism, who must own the means of production
If supply for a product is high but demand is low, what most likely needs to happen to achieve equilibrium?
Which of the following are correct steps to find the solution of the following equation? 8 = 18 – 2x
Carbon burns in the presence of oxygen to give carbon dioxide. Which chemical equation describes this reaction
China's population is 14.46×10^8. Marshall Islands' population is 602.5×10^2 . How many times larger is China's population than Marshall Islands' population
Subtract 2 hours, 20 minutes from 4 hours, 10 minutes.
what is 6814 correct to the nearest 10