If $x+y=2y-x+1=5$ , find the value of x

Subtract  $\tfrac{1}{2}(a-b-c)$ from the sum of $\tfrac{1}{2}(a-b+c)$and $\tfrac{1}{2}(a+b-c)$

if x : y = 3 : 2 and y :  z = 5 : 4, find the value of x in the ratio x: y: z

A box contains 13 current notes, all of which are either N50 or N20 notes. The total value of the currency notes is N530. How many N50 notes are in the box?

Three quarters of a number added to two and a half number gives 13. Find the missing number

When a number is subtracted from 2, the result equals 4 less than one – fifth of the number. Find the number