Answer:
The answer is B) 1.
Step-by-step explanation:
Combine the equations like this:

Then subtract
from all sides.

Simplify the equation.

Then subtract
from all sides.

Simplify again.

Multiply all sides by
.

Simplify again.

Divide all sides by 

Simplify again.

Answer:
hope it's correct and I helped
Step-by-step explanation:
3x + 6 = 18
[Figured it out themselves (see comments), just putting this here so it stops showing up as unanswered]
Answer:
4ft²²
Step-by-step explanation:
18. 3 (-5 + 1) = 6 x -3 = -18 false its -14
19. 1/2 x 2 + 1/4 x 12 = 8 false its 4