Find value of
x & y
[tex]21x + 6y = 57 \: \\ [/tex]
[tex]24x + \frac{7}{2}y = \frac{103}{2} [/tex]
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Solve by Determinat method
Answers & Comments
Answer:
x = 73/47
x = 73/47y = 191/47
Step-by-step explanation:
21x+ 6y = 57. (1)
24x + 7/2 y = 103/2. (2)
Simplify
48x + 7 y = 103. (3)
Multiply 1 by 7 and 3 by 6
147x+ 42y = 399. (4)
288x+ 42y = 618. (5)
(4) - (5)
-141x = -219
x = -219/ -141 = 73/47
putting x in (1)
y = 191/47
Solution ( 73/47,191/47)
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