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aleksey47
@aleksey47
August 2021
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Решите систему: {x+y=5x-4 {x+y=7x+8
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5*x-4=7*x+8
5*x-7*x=8+4
-2*x=12
x= - 6
x+y=5*x-4 при х= - 6
- 6+y=5*(-6)-4
y= -30-4+6
y= - 28
как то так
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