А) x : 4/25 = 3/4 : 4/5 б) 7 4/5 : 2 3/5 = 4 1/2 : y в) 15.04 : 2.688= m : 26.88 решите
А) x ÷ =
÷
x × =
×
=
25x × 16 = 4 × 15
400x = 60;
x = = 0,15
б) ÷
=
÷ y
7,8 ÷ 2,6 = 4,5 × =
3 × y = 4,5 × 1
3y = 4,5;
y = =
=
= 1,5
3. =
15,04 × 26,88 = 2,688 × m
2,688m = 404,2752;
m = =
= 150,4
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