Maths
posted by RAHEIM .
A drinking straw of length 21cm is cut into 3 pieces the length of the first piece is x cm the second piece is 3 cm shorter than the first piece the third is twice as long as the first piece state term of x to represent the sum of of the length {2} write an expression in the term of x , to represent the sum of the length of the three piececs of drinking straw {3} HENCE CALCULATE THE VALUE OF X

x + x  3 + 2x = 21
4x  3 = 21
4x = 24
x = ?