Question

3x+2y=16 metodo de susutitucion

Answer 1

3x + 2y = 16 Ec1

5x + y = 15 Ec2

x1 = 16 - 2y/3

5 (16 - 2y/3) + y = 15

5 (16 - 2y) = 3 (15 - y)

80 - 10y = 45 - 3y

-10y + 3y = 45 - 80

(-) -7y = -35

7y = 35

y = 35/7

y = 5

3x + 2y = 16 Ec1

3x + 2(5) = 16

3x + 10 = 16

3x = 16 - 10

3x = 6

x = 6/3

x = 2

5x + y = 15 Ec2

5x + 5 = 15

5x = 15 - 5

5x = 10

x = 10/5

x = 2

R// x = 2 ; y = 5

Comprobación

3x + 2y = 16 Ec1

3(2) + 2(5) = 16

6 + 10 = 16

16 = 16

5x + y = 15 Ec2

5(2) + 5 = 15

10 + 5 = 15

15 = 15

Espero haberte ayudado. Suerte en los estudios ≧◠◡◠≦.