I believe the answer is the first option. Tell me if i'm wrong. :)
Simplifying
9 + -2x = 35
Solving
9 + -2x = 35
Solving for variable 'x'.
Move all terms containing x to the left, all other terms to the right.
Add '-9' to each side of the equation.
9 + -9 + -2x = 35 + -9
Combine like terms: 9 + -9 = 0
0 + -2x = 35 + -9
-2x = 35 + -9
Combine like terms: 35 + -9 = 26
-2x = 26
Divide each side by '-2'.
x = -13
Simplifying
x = -13
Since the desk is $69.00 and the shipping charges are 6%
69*.06= 4.14
Your tax would be $4.14 so,
$4.14+$69.00= A total of $73.14
The first board is approximately 0.45 the second board is approximately 0.9 and the third board is approximately 19.8
X + 2 1/2 - 3/4 = 5 1/4 To find x, go backwards in the equation.
5 1/4 + 3/4 = 6 cups
6 - 2 1/2 = 3 1/2 cups
x = 3 1/2 cups