I have a Math Quiz for You Mathmatizers! I have a 72" 2x4 with 2 cuts/3 pieces The 2nd piece is twice as long as the 1st piece, The 3rd piece is twice as long as the 2nd piece. How long is the 1st piece?

the answer is 4

Step-by-step explanation:

let x = length of the first piece.

second piece is 2x, right

third piece x+5, right

Total, in x-talk, is x + 2x + x+5 and that equals 21 feet, right.

Combine like terms: 4x + 5 = 21. Still with me?

So 4x = 16 (do you see why?)

So, what x must x be is 4