October 2021 0 115 Report
Найдите корень уравнения: 1)10x+7=8x-9; 2)20-3x=2x-45; 3)2,7+1,9x=2x+1,5;
4)13/18x+13=7/12x+8.
Помогите пожалуйста!!!!!!!
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