Răspuns :
( 43 + x) + ( 537 - 214) = 975
( 43 + x ) + 323 = 975
43 + x = 975 - 323
43 + x = 652
x = 652 - 43
x = 609
( 43 + x ) + 323 = 975
43 + x = 975 - 323
43 + x = 652
x = 652 - 43
x = 609
[tex](43 + x ) + ( 537 - 214 ) = 975 \\ \\
43 + x +323 = 975 \\ \\
43 + x = 975 - 323 \\ \\
43 + x = 652 \\ \\
x = 652 - 43 \\ \\
x = 609 \\ \\
------------------------------------------------------------------------ \\ \\
Succes !! \\ \\ [/tex]