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olgaivanova04
@olgaivanova04
July 2022
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Помогите решить!!!
1) (Х-5)(Х-2)=0
2)16х + х +3х - 5х +14=299
3) 8а+7а+15=420
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Апельсинка1010
1) (х-5)(х-2)=0
Х в квадрате-2Х-5Х+10=0
Х1=5
Х2=2
2) 16х+х+3х-5х+14=299
16х+х+3х-5х=299-14
15х=285
х=19
3) 8а+7а+15=420
15а=420-15
15а=405
а=27
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Answers & Comments
Х в квадрате-2Х-5Х+10=0
Х1=5
Х2=2
2) 16х+х+3х-5х+14=299
16х+х+3х-5х=299-14
15х=285
х=19
3) 8а+7а+15=420
15а=420-15
15а=405
а=27