Tìm x biết

15 = 2 105 - (و
) 8 - 2 1 = 31
) (2-1) : 3 + ].5=20
ود و دو
) ( - ) 3 = 64
43) 20 - 1)
2.
15) 15 + (x + 2) ². 3 = 18.
47) (+6) (52-1) =0
31 = 5+2 + 5+1 52 (ور
---
) 8 7 - CH3- x) = 20
) 20 + (+2).2 = 4
) 18 + 3-3)
10) 3alt 1 =
63
=
و = 2(3-2) (12
14) 35- (x-2) ²:3 = 32
#) (2-4)( 2x + x3) :
) (4) (3 - 2) = 0
20) (3-2) 13 = 274
=