Question

dada a equaçao 5x-2y=1, qual o valor de x em:(x,-4), (x,6), (x,3), (x,-8), (x,1)

Answer 1

5x - 2y = 1

(x,-4):

5x - 2.(-4) = 1

5x +8 = 1

5x= -7

x= -7/5

(x,6):

5x - 2y = 1

5x - 2.(6) = 1

5x - 12 = 1

5x= 13

x= 13/5

(x,3):

5x - 2.(3) = 1

5x - 6 = 1

5x = 7

x= 7/5

(x,-8)

5x - 2.(-8) = 1

5x + 16 = 1

5x = -15

x= -15/5

x= -3

(x,1)

5x - 2.(1) = 1

5x - 2 = 1

5x= 3

x= 3/5