Question

Solve the following pair of linear equation by substitution method X + 2 Y is equal to minus 1 and 2 x minus 3 Y is equal to 12

Answer 1

x+2y=-1

2x-3y=12

1*3⏩ 3x+6y=-3

2*2⏩ 4x- 6y=24

__________

7x+0x= 21

7x = 21

x =21/7

x=3

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