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kap26 [50]
2 years ago
6

Solve: 2x+4y=20 and 2x-y=4

Mathematics
2 answers:
Masteriza [31]2 years ago
5 0

Answer:

X=3.6

Y=3.2

Step-by-step explanation:

  1. 2x-y=4 which means 2x=<u>4+y</u>
  2. 2x+4y = 20 which means <u>4+y</u>+4y=20 ==> 4+5y=20
  3. 5y = 20-4 = 16
  4. y= 16/5 = 3.2
  5. 2x=<u>4+y</u>=4+3.2=7.2
  6. x = 7.2/2 = 3.6

fgiga [73]2 years ago
4 0
Answer:
(x, y) = (18/5, 16/5)
OR
(x, y) = (3.6, 3.2)
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