( Х - 1 1/3 ) : 1 5/12 = 4/51
Х - 1 1/3 = 4/51 * 17/12
X - 1 1/3 = 1/9
X = 1/9 + 4/3
X = 1/9 + 12/9
X = 13/9
X = 1 ц 4/9 ( Ответ )
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( 4Х + 3 5/8) * 4/9 = 2 1/2
4X + 3 5/8 = 2 1/2 : 4/9
4X + 3 5/8 = 5/2 : 4/9
4X + 3 5/8 = 45/8
4X = 45/8 - 29/8
4X = 16/8
4X = 2
X = 2 : 4
X = 0,5 ( Ответ )