Hello! Could you please help me find the LCM (least common multiple) for the following problems?
7,10 9,4 8,12

thank you!

Aflute is on sale for 20% off. including the discount and 8% tax, the sales price is $216.

If a 36 inch yardstick casts a 21 foot shadow, how tall is a building whose shadow is 168 feet? what is the scale factor

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label?