Question

Which ordered pair is the solution to the system of equations?

2x-y=-5
x+3y=22

A.
(1, 7)

B.
(4, 9)

C.
(7, 19)

D.
(8, 21)
@ganeshie8 @hartnn @mathstudent55 @Abhisar @dan815 @iambatman @Callisto @.Sam.

Answer 1

Multiply the first equation by 3 and add tot eh second equation.
Solve for x.
Then find the answer that has that same x value.

Answer 2

2x-y=-5 -----(1)
x+3y=22 -----(2)

Multiply second eq with 2
2(x+3y=22)
2x +6y = 44 ------(3)

subtract (1) from (3)
(2x +6y) - (2x -y) = 44- (-5)
7y = 49
find x and y

Answer 3

is it a @sangya21 @mathstudent55

Answer 4

Correct. :)

Answer 5

2x-y=-5 --- *3 ---> 6x - 3y = -15
x+3y=22 ---------> x + 3y = 22
-----------
7x = 7
x = 1
Since the only choice that has x = 1 is A, the answer must be A, and don't even need to solve for y.

Answer 6

You are correct.

Answer 7

Which ordered pair is the solution to the system of equations?

x+3=12
-4x+3y=-3

A.
(0, 4)

B.
(6, 2)

C.
(3, 3)

D.
(0, −1)

Answer 8

Subtract 2 from 1. Find the value of x and y

Answer 9

is this d??

Answer 10

Correct :)

Answer 11

omg are u serious thanks

Answer 12

Anytime :)

Answer 13

can u help me with 2 more?

Answer 14

sure