x – 75684 = 3054 : 6 13745 – x = 578 \(\times\) 8
x - 75684 = 509 13745 - x = 4624
x = 76193 x = 9121
a: \(\Leftrightarrow x-75684=509\)
hay x=76193
x - 75684 = 3054 : 6
x - 75684 = 509
x = 509 + 75684
x = 76193
13745 - x = 578 x 8
13745 - x = 4624
x = 13745 - 4624
x = 9121