Поиагите пожалуйста срочно
1) 7,2x + 1,8x = 9x 2) 1/6x + 1/2x = 1/6x + 3/6x = 4/6x = 2/3x 3)9,3x - 1,4x = 7,9x 4)3/4x - 1/2x = 3/4x - 2/4x = 1/4x 5)10x - 6,7x = 3,3x 6)x - 4/5x = 5/5x - 4/5x = 1/5x