Question

решите уравнение срочно

Answer 1

а) 0,4(6х-7)=05(3х+7), 2,4х-1,5х=2,8+3,5,  0,9х=6,3, х=7
б) 7(1,4х+1,8)-27,6=10,1х, 9,8х+12,6-27,6-10,1х, -0,3х=15, х=-50
в) ( 2 7/9х+ 3 1/3)3/5=1/6х+ 6 1/2, 5/3х+2=1/6х+ 6 1/2. 5/3х-1/6х=6 1/2+2, 9/6х=8 1/2, х=5 2/3