Determine the equivalent system for the given system of equations.

4x - 5y = 2

10x - 21y = 10

a. 4x - 5y = 2

3x - y = 4

b. 4x - 5y = 2

24x - 47y = 22

c. 4x - 5y = 2

10x + 3y = 15

d. 4x - 5y = 2

14x + 26y = 12

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