Which of the following is not equivalent to the equation a- 3b = 5c + 9

when a=1 , b=2, c= -1

when a=1 , b=2, c= -1Step-by-step explanation:

when a=1 , b=2, c= -1Step-by-step explanation:1-3(2)= 5(-1)+9

1-6= -5+9

1-6= -5+9-5 = 4

a-3(b) = 5c + 9 is not equivalent

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

468

step-by-step explanation: