How do you simply equations?

Simplify the expression. 54-6 ⋅ 5:3

How to write 3910.28 x 10 to negative 6 power in scientific notation

A train travels 25 miles in 20 minutes. What is the trains speed in miles per hour

What is the simplest form of 1 2/3x 4 2/5

Write the equation in standard form x=14-2y

In order for Mark to get to work he needs to drive 10 miles south and 20 miles east. How many miles would he have to go if there was a road going southeast straight to his destination?

How many more vehicles have been driven between 50 and 100 thousand kilometers than between 250 and 300 thousand kilometers?

Which is the better buy? A 12 pack of Pepsi for $3.50 or a 6 pack for $1.80?

How many centigrams are in 1 gram?

The question is: Write and solve an equation to determine the width 'w' of the flag. The length of an American flag is 1.9 times its width. I need to find the equation and the width of the flag