Toán Lớp 6: 25/6 + x = 49/4
[72/6 – 36/4 x ] . 1/3 = 5/9
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Toán Lớp 6: 25/6 + x = 49/4
[72/6 – 36/4 x ] . 1/3 = 5/9
Comments ( 2 )
25/6 + x = 49/4
x = 49/4 – 25/6
x = 97/12
Vậy x = 97/12
( 72/6 – 36/4 . x ) . 1/3 = 5/9
72/6 – 36/4 . x = 5/9 : 1/3
72/6 – 36/4 . x = 5/3
12 – 9.x = 5/3
9.x = 12 – 5/3
9.x = 31/3
x = 31/3 : 9
x = 31/27
Vậy x = 31/27
a)
25/6 + x = 49/4
x = 49/4-25/6
x=97/12
Vậy x=97/12
b)
(72/6 – 36/4 x ) . 1/3 = 5/9
(72/6 – 36/4 x ) = 5/9:1/3
72/6 – 36/4 x = 5/3
36/4 x =72/6 – 5/3
36/4 x=31/3
x=31/3:36/4
x=31/17
Vậy x=31/27