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polina2004fotostrana
@polina2004fotostrana
June 2022
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Здравствуйте,помогите с уравнениями:
а)(450:х+50):70=2
б) (14-у)*4-9=19
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Gor4itza
Verified answer
А)(450:х+50):70=2
450:х+50=2*70
450:х+50=140
450:х=140-50
450:х=90
х=450:90
х=5
б)(14-у)*4-9=19
56-4у=19+9
56-4у=28
4у=56-28
4у=28
у=28:4
у=7
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Verified answer
А)(450:х+50):70=2450:х+50=2*70
450:х+50=140
450:х=140-50
450:х=90
х=450:90
х=5
б)(14-у)*4-9=19
56-4у=19+9
56-4у=28
4у=56-28
4у=28
у=28:4
у=7