Question

Решите плиз 3 уравнения 1)2 1\2х-1 5\8=2 3\4 2) 1\4+х:3 5\9=7\16 3)4 2\5 : x- 2 3\5=7\10

Answer 1

1) 2 1/2X - 1 5/8 = 2 3/4 
    2.5X - 1.625 = 2.75 
    2.5X = 4.375 
    X = 1.75 
    X = 1 3/4
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2) 1/4 + X : 3 5/9 = 7/16 
    X : 3 5/9 = 7/16 - 1/4 = 7/16 - 4/16 = 3/16 
    X : 32/9 = 3/16 
    X = 3/16 * 32/9 = 32/48 = 2/3 
    X = 2/3 
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3) 4 2/5 : X - 2 3/5 = 7/10 
    4.4 : X = 0.7 + 2.6 
    4.4 : X = 3.3 
     X = 4.4 : 3.3 
     X = 44/33 =1 11/33 = 1 1/3 
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