Please excuse my dear aunt Sally. Parenthesis, exponents, multiplication, division, addition, subtraction.
You take a right triangle and find the lengths of the two sides that are vertical and horizontal. Then, using the formula a^2 + b^2 = c^2, find the length of C
(aka: Hypotenuse)
I believe 3 hours, not sure. Wait and see if someone else answers!
1.5x + 7 = 20.5
First subtract 7 from both sides
1.5x = 13.5
Then divide both sides by 1.5
x = 9
Let me know in comments if you have questions
the product of x and 5.2 is 140. find the value of X