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x=2+3
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? ?
, 1 ,
X+ 3 = 7
15
, = x = 15 = 4, x 15 = 4
, = x = 3x ,x + 3x + x + 3x = 80 ,8x = 80 , X = 10
? ? ?) x- 4 ) x +2 =5) x/3 ) x*7
?