Question

3x+4y=-6,3x-y=9 by elimination method

Answer 1

Answer:

hy mate here is the answer:---

Step-by-step explanation:

3x+4y=-6]×1-------(1)

3x-y=9]×1-----(2)

- + -

━━━━━━━━━━━

=5y=-6-9

=5y=-15

=y=-3

So, here we find the y value is -3 then we can find x easily by putting the value of y in any equation (1) or (2)

According to question,

so we put the value of y in equation (1)

3x+4y=-6

we know that y =-3

3x+4(-3)=-6

3x=-6+12

x=-6+12/3

x=2

here the value of

x=2 and y= -3

hope u get the answer❤❤❤

have wonderful day✌✌✌

Answer 2

Answer:

Eq. 1 and 2 sub.

5y=-15

Y=-3

Put y=-3 in Eq. 1

3x+4y=-6

3x-12=-6

3x=6

X=2