Question

solve the following equations by using substitution and elimination method
x+2y+1=0, 2x-3y-12=0
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Answer 1

Answer:

Step-by-step explanation:

Multiplying first equation by 2 we get2x+4y=-2

equ1 -equ2

2x+4y=-2

-2x+3y=-12

7y=-14

y=-14/7=-2

Similarlyx=-2y-1

-2(-14/7)-1

=28/7-1

=21/7=3

Therefore x=3and y=-2