Question

qual e o valor de x me ajudem ??

Answer 1

$a) \\ \frac{3x}{2} +x=90 \\ \\ mmc=2 \\ \\ 3x+2x=180 \\ \\ 5x=180 \\ \\ x=180\div5 \\ \\ x=36$  


$b) \\ 20+ \frac{3x}{2} + \frac{x}{2} =180 \\ \\ mmc=2 \\ \\ 40+3x+x=360 \\ \\ 4x=360-40 \\ \\4x=320 \\ \\ x=320\div4 \\ \\ x=80$