当c代表一个数，并且c+6=15，c等于多少？

If using C to represent one number, and C+6=16, what is the value of C?

用字母表示数时，a = 5, b = 3，那么a + b等于多少？

When using letters to represent numbers, a = 5, b = 3, so what does the value of  (a + b )?

假设y代表一个数，若y+7=12，那么y是多少？

Suppose y represents a number, if y + 7 = 12, what is y?

假如h代表一个数，h-9=11，那么h是多少？

If h represents a number and h-9 = 11, what is h?

Hong has m pieces of pencils, and now she purchased another 7, how many she has total?

If there are n oranges in a fruit bowl and 5 oranges are added, how many oranges are in the bowl?

There are g roses and h tulips in a garden. Use an expression to represent the total number of flowers in the garden.

丽丽跟妈妈相差25岁，丽丽今年a岁，那么妈妈今年的年龄是?

Lili and her mum are 25 years apart, Lili is a years old, so her mum's age is?