Question

x + y + z = 110
4x+ 5y+6z = 540
y+z = 1,20x​

Answer 1

Respuesta:

$x + 1.20x = 110$

$2.20x = 110$

$x = 110 \div 2.20$

$x = 50$

$y + z = 1.20 \times 50$

$y + z = 60$

$z = 60 - y$

$50 + y + 60 - y = 110$