Solve the system by substitution

The solution to the system of equations be:

Step-by-step explanation:

Given the system of equations

4x-2y = 16

y = -5x+13

Solving the system of equations using the substitution method

Substitute y = -5x+13 in 4x-2y = 16

Now isolate x for

Add 26 to both sides

Simplify

Divide both sides by 14

Simplify

For y = -5x+13

Substitute x = 3

Simplify

Therefore, the solution to the system of equations be:

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