Question

Me ajudem pessoal. Preciso entregar amanhã.

Answer 1

$a)\ \frac{x}{4} - \frac{x}{6} =3 \\ \\ \frac{6x-4x}{\not24} = \frac{72}{\not24} \\ \\ 6x-4x=72 \\ 2x=72 \\ x= \frac{72}{2} \\\\ \boxed{\boxed{x=36}}$



$b)\ \frac{3x}{4} - \frac{x}{3} =5 \\ \\ \frac{9x-4x}{\not12} = \frac{60}{\not12} \\ \\ 9x-4x=60 \\ 5x=60 \\ x= \frac{60}{5} \\ \\ \boxed{\boxed{x=12}}$



$c)\ \frac{x}{5} -1=9 \\ \\ \frac{x-5}{\not5} = \frac{45}{\not5} \\ \\ x-5=45 \\ x=45+5\\\boxed{\boxed{x=50}}$



$d)\ \frac{x}{3} -5=0 \\ \\ \frac{x-15}{\not3} = \frac{0}{\not3} \\\\ x-15=0 \\\boxed {\boxed{x=15}}$



$e)\ \frac{x}{2} +\frac{3x}{5} =6 \\ \\ \frac{5x+6x}{\not10} = \frac{60}{\not10} \\ \\ 11x=60 \\ \\x= \boxed{\boxed{\frac{60}{11} }}$



$f)\ \frac{x}{5} + \frac{x}{2} = \frac{7}{10} \\ \\ \frac{2x+5x}{\not10} = \frac{7}{\not10} \\ \\ 7x=7 \\ x= \frac{7}{7} \\ \\ \boxed{\boxed{x=1}}$