Автор - svetarusova11

0.5*(x+3)=0.8*(10-x) решите пожалуйсто

Ответ

Автор - bahyt975
0.5x+1.5=8-0.8x
0.5x+0.8x=8-1.5
1.3x=6.5
x=6.5/1.3
x=5

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