Решите уравнения. (Срочно!)
684. -2x+1+5(x-2)=-4(3-x)+1
685. -5x-5+5(-x-5)=-(-5-x)-4
686.⬇
x- x/12( Дробь )=-55/12( Дробь)
687. .x-x/0(дробь)=8/3 (дробь)
Дам 33 бб.
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