Toán Lớp 5: Tìm y, biết: 2,5 x y – 12,8 = 0,62 x 10
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Toán Lớp 5: Tìm y, biết: 2,5 x y – 12,8 = 0,62 x 10
Comments ( 2 )
2,5 x y – 12,8 = 6,2
2,5 x y = 6,2 + 12,8
2,5 x y = 19
y = 19 : 2,5
y = 7,6