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atroni [7]
3 years ago
5

5x - 10y = 15 3x + 7y = 31

Mathematics
1 answer:
Andreas93 [3]3 years ago
8 0

Answer:

x=6.385 and y=1.692

Step-by-step explanation:

solve the simultaneous equations as show;

7(5x - 10y = 15)

10(3x + 7y = 31)

35x-70y=105

30x+70y=310

Eliminate y; 65x=415

solve for x=415/65 = 6.385

solve for y⇒where 5x-10y=15

(5×6.385)-10y=15

31.92-10y=15

16.92=10y

y=1.692

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