WILL GIVE BRANLIEST! pls help tysm!

option D

Step-by-step explanation:

x + 6/x - 3 = 4/7

do cross multiplication

4(x - 3) = 7(x + 6)

4x - 12 = 7x + 42

4x - 7x = 42 + 12

-3x = 54

x = 54/-3

x = -18

x = -18

Step-by-step explanation:

multiply both sides by 7:

(7) x+6/x-3 = 4/7 (7)

7x+42/x-3=4

multiply both sides by x-3:

(x-3)7x+42/x-3=4(x-3)

7x+42=4x-12

bring the x's to one side and the coefficents to the other:

3x=-54

divide both sides by 3:

x=-18

hello from mrbilldoesmath!

answer:

a(n) - a(n-1) -3

discussion:

this ones a bit interesting. given a(n) = 5 - 3n consider this:

a(n-1) = 5 - 3(n-1)

          = (5 - 3n) + 3             => but a(n) = 5 - 3n, the first term

          = a(n)   + 3                 => subtract 3 from both sides

a(n-1) -3 = a(n)  

or

a(n) - a(n-1) -3

you,

mrb