Ответ:
1. 8
2. 7/6
3. 1,12
Объяснение:
1. 2/7x=16/7
2/7×7/2x=16/7×7/2
x=8
2. y:3/2=7/3×1/3
y:3/2=7/3×1/3
y×2/3=7/9
y×2/3×3/2=7/9×3/2
y=7/6
3. 15/32x-6/40=3/8
160×(15/32x-3/20)=(3/8)×160
75x-24=60
75x=84
x=84/75=28/25=1,12
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Answers & Comments
Ответ:
1. 8
2. 7/6
3. 1,12
Объяснение:
1. 2/7x=16/7
2/7×7/2x=16/7×7/2
x=8
2. y:3/2=7/3×1/3
y:3/2=7/3×1/3
y×2/3=7/9
y×2/3×3/2=7/9×3/2
y=7/6
3. 15/32x-6/40=3/8
160×(15/32x-3/20)=(3/8)×160
75x-24=60
75x=84
x=84/75=28/25=1,12