Question

1.
5x-4y+8=0
7x+6y-9=0
2.
9x+3y+12=0
18x+6y+24=0 ​

Answer 1

Step-by-step explanation:

For question 1:

Step 1:

5x - 4y = -8

7x + 6y = 9

( shift the no. without variable on right hand side)

Step 2:

(5x - 4y = -8) *3

(7x + 6y = 9) *2

( multiply the equations so as to make a no on LHS equal )

Step 3:

15x - 12y = -24

14x + 12y = 18

(write the answers after calculation )

Step 4:

29x = 6

( y will be cancelled out )

Step 5:

15 *6 /29 - 12y = -24

90 - 348y = - 696

90 + 696 = 348y

786 = 348y

y = 348 / 786

y = 179/ 398

x= 6/29

(solve any of the equation by putting the value of x in it)

For question 2:

Step 1:

3x + y = -4

3x + y = -4

( simplify the equations and move the number without variable on RHS)

Step 2:

0 = 0

( on solving the equations both x and y would cut 0 will be left)

therefore :

x = 0

y = 0

I hope my answer is helpful to you and please inform me it is and even if it has some error

Thankyou so much !!! ☺️☺️☺️