How tall are sally and anna if sally is 0.1m taller than anna and their combined height is 3.16m?

h + h + 0.1 = 3.16 The rule is you can do any valid operation on both sides of an equation and it will still be equal. Subtract 0.1

2h = 3.06 Divide by 2.

h = 1.53 So Anna is 1.53m and Sally is 1.63m. Anna and Sally are names so they are capitalized.