Question

1/4+x=17/20...........

Answer 1

Resolver.
1/4 + x = 17/20
x = 17/20 -1/4  El mcm de los denominadores 4 y 20 es 20
x = 17/20 - 5 /20
x = (17 - 5)/20
x = 12/20  Simplificando
x = 3/5

x = 3/5

Answer 2

$\frac{1}{4}+x = \frac{17}{20} \\ \\ x = \frac{17}{20}- \frac{1}{4} \\ \\ x = \frac{17}{20} - \frac{1*5}{4*5} \\ \\ x = \frac{17-5}{20} \\ \\ x= \frac{12}{20} \\ \\ x= \boxed{ \frac{3}{5}}$

Espero que te sirva, salu2!!!!