Question

5x + 4y - 4 = 0
x - 20 = 12y. simultaneous linear equations​

Answer 1

Step-by-step explanation:

5x + 4y - 4 = 0

x - 20 = 12y

after converting both the equations into standard form, we get these equations

5x+4y=4 --(i)

x-12y=20 --(ii)

multiply equation i by 3

3 x ( 5x+4y=4 )

we get,

15x+12y=12 --( iii )

add equation ii and iii

x - 12y + 15x + 12y = 20 + 12

16x = 32

x = 32/16

x = 2

take equation i and substitute the value of x

5x + 4y = 4

5(2) + 4y = 4

10 + 4y = 4

4y = 4-10

4y = -6

y = -6/4

y = -3/2

Solution of the equation :

x = 2

y = -3/2