Объяснение:
B2B3-A2A3=6 => B2B3=6+A2A3
k=A1A2/B1B2=3/4
A2A3/B2B3=k
A2A3/(6+A2A3)=3/4
3(6+A2A3)=4A2A3
18+3A2A3=4A2A3
18=4A2A3-3A2A3
18=A2A3
ответ: А2А3=18
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Объяснение:
B2B3-A2A3=6 => B2B3=6+A2A3
k=A1A2/B1B2=3/4
A2A3/B2B3=k
A2A3/(6+A2A3)=3/4
3(6+A2A3)=4A2A3
18+3A2A3=4A2A3
18=4A2A3-3A2A3
18=A2A3
ответ: А2А3=18