Q. 4 B5.0( 3 Votes )

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Answer :

The two given equations are:   Then, the equations become – eqn 1 - eqn 2

Multiply eqn 1 by 13 and eqn 2 by 7 subtract eqn 1 from eqn 2

7 × 13a + 13 × 13b = 27 × 13

91a + 169b = 351----let equation 3

13 × 7a + 7 × 7b = 33 × 7

91a + 49b = 231----let equation 4 b = 1

and a = 2

But we have     Rate this question :

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