Question

28) What is the solution of the equation x+y=15 and y=2x+3. *

1 point

A)(11,4)

B)(4,11)

C)(10,5)

D)(5,10)​

Answer 1

Answer:

What is the solution of the equation x+y=15 and y=2x+3. *

x=4 y=11

Step-by-step explanation:

option b

Answer 2

Answer:

( 4 , 11 )

Step-by-step explanation:

Given : x + y = 15 _____ ( 1 )

y = 2x + 3 _____ ( 2 )

substitute equation ( 2 ) in equation ( 1 ) we get ,

x + y = 15

x + 2x + 3 = 15

3x + 3 = 15

3x = 15 - 3

3x = 12

x = 12/3

x = 4

substitute 'x' value in equation ( 2 )

we get ,

y = 2x + 3

y = 2(4) + 3

y = 8 + 3

y = 11

x = 4 , y = 11

( 4 , 11)

I hope it will be helpful to you