Question

The solution of the pair of linear equations 2x-3y=13.7x-2y=20 are.
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Answer 1

7x-2y=20

2x-3y=13

14x-4y=40 --multiple(2)

14x-21y=91--(multiple 7)

14x-21y=91

14x-4y=40

(subtrection)

=-17y=51

y=51/17

y=3

7x-2y=20

7x-2×3=20

7x-6=20

7x=26

x=26/7

y=3