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CKyTepucT
@CKyTepucT
August 2022
1
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Помогите с двумя уравнениями
1)
[tex] \frac{x-a}{bc}- \frac{x-b}{ac}+ \frac{x-c}{ab}=0 [/tex]
2)
[tex] \frac{2(x+4b)}{a+b}- \frac{x-2c}{a-b}=5 [/tex]
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sedinalana
1
abc≠0
ax-a²-bx+b²+cx-c²=0
x(a-b+c)=a²-b²+c²)
x=(a²-b²+c²)/(a-b+c)
2
a≠-b;a≠b
(2x+8b)(a-b)-(x-2c)(a+b)=5(a²-b²)
2ax-2bx+8ab-8b²-ax-bx+2ac+2bc=5a²-5b²
ax-3bx=5a²-5b²-8ab+8b²-2ac-2bc
x(a-3b)=5a²+3b²-8ab-2ac-2bc
x=(5a²+3b²-8ab-2ac-2bc)/(a-3b)
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Answers & Comments
abc≠0
ax-a²-bx+b²+cx-c²=0
x(a-b+c)=a²-b²+c²)
x=(a²-b²+c²)/(a-b+c)
2
a≠-b;a≠b
(2x+8b)(a-b)-(x-2c)(a+b)=5(a²-b²)
2ax-2bx+8ab-8b²-ax-bx+2ac+2bc=5a²-5b²
ax-3bx=5a²-5b²-8ab+8b²-2ac-2bc
x(a-3b)=5a²+3b²-8ab-2ac-2bc
x=(5a²+3b²-8ab-2ac-2bc)/(a-3b)