0,4x-0,4-2 (x+2) 4x-5,5-5x-3(2x-1,5) 4-5(3x+2,5)-3x+9,5 - вопрос №29235210404224555321545325395 от nastenka082004 13.02.2020 04:59

Question

Математика: 0,4x-0,4-2 (x+2) 4x-5,5-5x-3(2x-1,5) 4-5(3x+2,5)-3x+9,5

nastenka082004 · Answer

0.4x - 0.4 -(x+2) = 0.4x - 0.4 - 2x - 4 = - 1.6x - 4.44x - 5,5 - 5x - 3( 2x - 1,5) = -x - 5,5 - 6x + 4,5 = - 7x -14 - 5( 3x + 2,5) - 3x + 9,5 = 4 - 15x - 12/5 - 3x + 9,5 = - 18x +1...