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блак1
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July 2022
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Найдите корень уравнения: а:(8+5x)=6 при а =108 18×(b-7x)=90 при b=40 (3x +c)÷14=5 при с =58
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aleksandruklili
Verified answer
А:(8+5х)=6 при а=108
108:(8+5х)=6
8+5х=108:6
8+5х=18
5х=18-8
5х=10
х=10:5
х=2
18*(ь-7х)=90 при ь=40
18*(40-7ь)=90
40-7ь=90:18
40-7ь=5
7ь=40-5
7ь=35
ь=35:7
ь=5
(3х+с):14=5 при с=58
(3х+58):14=5
3х+58=5*14
3х+58=70
3х=70-58
3х=12
х=12:3
х=4
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Verified answer
А:(8+5х)=6 при а=108108:(8+5х)=6
8+5х=108:6
8+5х=18
5х=18-8
5х=10
х=10:5
х=2
18*(ь-7х)=90 при ь=40
18*(40-7ь)=90
40-7ь=90:18
40-7ь=5
7ь=40-5
7ь=35
ь=35:7
ь=5
(3х+с):14=5 при с=58
(3х+58):14=5
3х+58=5*14
3х+58=70
3х=70-58
3х=12
х=12:3
х=4