-8n + 4(1 + 5n) + 6 = -14
Pls help

n = -2

Step-by-step explanation:

Step 1: Simplify both sides of the equation.

−8n+4(1+5n)+6=−14

−8n+(4)(1)+(4)(5n)+6=−14(Distribute)

−8n+4+20n+6=−14

(−8n+20n)+(4+6)=−14(Combine Like Terms)

12n+10=−14

12n+10=−14

Step 2: Subtract 10 from both sides.

12n+10−10=−14−10

12n=−24

Step 3: Divide both sides by 12.

n=−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