Răspuns
Explicație pas cu pas:
( a x 8 +450 x 250) :3147 + [( 83 x 6 x 8 -( 20000- 16216) ] =300
( a x 8+112500) :3147 +[(498 x 8- 3784]=300
( a x 8+112500) : 3147+( 3984-3784)=300
(a x 8+112500) :3147+200=300
(a x 8+112500) : 3147=300-200
(a x 8 +112500) :3147=100
a x 8 +112500=100 x 3147
a x 8 +112500=314700
a x 8=314700-112500
a x 8=202200
a=202200:8
a=25275