Question

3x-2y=4 ; 6x+7y=19
elimination and substitution
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Answer 1

Answer:

3x-2y =4. --- (1)

6x+7y=19 ----(2)

multiply eq. with 2

6x-4y =8

6x+7y=19

-. -. =-

0 +(-3y);=-11

3y =11

y = 11

Answer 2

3x−2y=4

6x +7y=19

Multiply (1) by 2 we get,

6x−4y=8

Subtracting (2) and (3) we get,

y=1

Re substituting y = 1 in (1) we get,

x=2