Question

3x+2y=12,5x-2y=4 by substitution method

Answer 1

Answer:

x = 2 and y = 3

Step-by-step explanation:

5x - 2y = 4..(1)

Now,

3x + 2y = 12...(2)

3x = 12 - 2y

x = (12 - 2y)/3...(3)

Substituting (3) into (1),

5(12-2y)/3 - 2y = 4

(60-10y)/3 - 2y = 4

(60-10y)/3 - 6y/3 =4

(60 - 10y - 6y)/3 = 4

60 - 10y - 6y = 12

-16y = 12-60 = -48

16y = 48

Therefore, y = 48/16 = 3.

Substituting y = 3 into (2).

3x = 12 - 6 = 6

Therefore, x = 6/3 = 2.

Thus, x = 2 and y = 3.

Hope this helps you!

Please mark this answer as the Brainliest!