How can you use a number line to add and subtract like fractions?

How to solve a simultaneous equation involved with fractions?

Write the fraction 9/50 as a decimal if needed round to the nearest hundredth

One astronomical unit (1 au) is about 1.496 alt tag missing. kilometers. if you wrote this number of kilometers in regular decimal notation (for example, 528 and 3,459 are written in regular decimal notation), how many zeros would your number have?