Ответ:
№133
1) k=1/5
2) k=1/6
3) k=1/8
4) k=1/20
№135
1) y+5/110=42/660
y+5/110=7/110
y+5=7
y=7-5
y=2
2) 25/17-y=200/56
25/17-y=25/7
17-y=7
-y=7-17
-y=-10
y=10
3) 77/800=7,7/y+53
77/800=77/10/y+53
77/800=77/10(y+53)
y+53=80
y=80-53
y=27
4) 1/1,8=40-y/32,4
1/9/5=40-y/162/5
5/9= (40-y)×5/162
5/9=200-5y/162
810=9 (200-5y)
90=200-5y
5y=200-90
5y=110
y=22
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Verified answer
Ответ:
№133
1) k=1/5
2) k=1/6
3) k=1/8
4) k=1/20
№135
1) y+5/110=42/660
y+5/110=7/110
y+5=7
y=7-5
y=2
2) 25/17-y=200/56
25/17-y=25/7
17-y=7
-y=7-17
-y=-10
y=10
3) 77/800=7,7/y+53
77/800=77/10/y+53
77/800=77/10(y+53)
y+53=80
y=80-53
y=27
4) 1/1,8=40-y/32,4
1/9/5=40-y/162/5
5/9= (40-y)×5/162
5/9=200-5y/162
810=9 (200-5y)
90=200-5y
5y=200-90
5y=110
y=22