Question

7x +3y =15, 12y - 5x =39
खालील समीकरण क्रेमरच्या पद्धतीने सोडव ​

Answer 1

Answer:

y = 145.5.... x = -60.21

Step-by-step explanation:

- 7x + 3y = 15

- 7x = 15 - 3y

- x = (15 - 3y)/7........(1)

- 12y - 5(15 - 3y)/7 = 39

- 12y - (75 - 15y)/7 = 39

- (7y - 75 + 15y)/84 = 39

- 7y - 75 + 15y = 39 x 84

- 22y - 75 = 3276

- 22y = 3276 - 75

- y = 3201/22

- y = 145.5

- x = (15 - 3 x 145.5)/7

- x = (15 - 436.5)/7

- x = 421.5/7

- x = -60.21