Question

x+y= 18 ; 4x-3y=16 solve the following pair of equation​

Answer 1

Answer:

x=10 and y=8

Step-by-step explanation:

x+y=18

4x-3y=16

lets us make the coefficients of x equal

such that,

4x+4y=72

4x-3y=16

by elimination method,

(4x-4x) + (4y+3y) = 72-16

7y=56

y=8

by putting y's value in 1st eqn. ,

x+8=18

x=18-8

x=10

Answer 2

Answer:

x=10, y=8

Step-by-step explanation:

x+y = 18 ⇒ x=18-y

4x-3y= 16 ( substitute x=18-y)

we get, 4(18-y) -3y = 16

             72-4y - 3y =16

             72-16 = 7y

              y = 56/7

              y= 8

To get x value ⇒ x+8 = 18

                                x = 18-8

                                x = 10