Question

Solve the system : 44 x + 15 y = 1 -7x + 5y = 22

Answer 1

Answer:

Step-by-step explanation:

44x + 15y = 22                    (1)

-7x + 5y +1 = 22                  Subtract 1 from this equation

-7x + 5y = 21                        (2)  Multiply this equation by 3

-21x + 15y = 63                     (3)  Subtract (1) from (3)

44x + 15y = 22

-65x = 41                             Divide by - 65

x = 41/-65                            Use this value to find y.

x = -0.6308

I can't believe anyone really gave you this.

44(41/-65) + 15y = 22

-27.75 + 15y = 22

15y = 22 + 27.75

15y = 49.75

y = 3.316

I checked this with my calculator that does these sorts of questions. The answers are correct

 

Answer 2

Answer:

x+2y=4x+2y=4 , x−y=−3x-y=-3

x+y=3x+y=3 , 2x−8y=192x-8y=19

4x+4y=14x+4y=1 , 6x−y=1