Question

7 ( x + 1 supra 5) = 1
intreg 3 supra 4

Answer 1

7(x+1/5) = 1 3/4 ; 7x+7/5 = (4+3)/4 = 7/4 ; numitor comun 20

140x+28 = 35 ; 140x = 35-28 = 7 ; x = 7/140 = 1/20 ;