-3a + 5 =-1 please help me

2

Step-by-step explanation:

To find a we need to first isolate it. There is a 5 on the left side along with the -3a that has to be moved.

To do this, we can subtract 5 from both sides of the equation using the subtraction property of equality.

-3a + 5 - 5 = - 1 - 5

-3a = -6

Now that the a term is isolated, the next step is to remove the coefficient.

Let's use the division property of equality and divide both sides of the equation by -3.

-3a/-3 = -6/-3

a = 2

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

john got lost so he didn't know what to do and it was crazy because he didn't except it

step-by-step explanation:

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