Question

Me ajudaa por favor, é urgente

Answer 1

Answer: x=16 kg.

Explanation:

`\displaystyle\\x+x+(1)/(2)x=40\\\\ 2(1)/(2)x=40\\\\((2*2+1))/(2)x=40\\\\ (5)/(2) x=40\\\\Multiply\ both\ sides\ of\ the\ equation\ by\ 2:\\\\(5)/(2)x*2 =40*2\\\\5x=80\\\\Divide\ both\ sides\ of\ the\ equation\ by\ 5:\\\\x=16\ kg.`