
<em>In decimal form, a = 114.5; b = 25.5</em>
We will write this as a system of equations, where
and
are the two angles.

We will use substitution to solve this system. We know what
equals, so we plug that into the second equation.

Combine the like terms.

Add
on both sides.

Divide both sides by
.

Now just subtract that from
.

Answer:
x=-1 y=1 z=-.7?
Step-by-step explanation:
The given formula 
Solve for y means we have to make y alone
\\
Add -10 on both sides, we get

As there is multiplication sign between r and y so to solve for y, divide both side by r

Answer:
CD= 2x-1
Step-by-step explanation:
AD = 6x-4
AC = 4x - 3
CD= AD- AC
CD= 6x-4 - (4x - 3)
CD= 6x - 4 - 4x +3
CD= 2x -1
Therefore, the value of CD= 2x-1