Prosze o rozwiązanie tych równań. Bardzo zalezy mi na czasie bo mam to na jutro. Z góry dzięki :) 2/m=3/7 a+3/5=7/5 3/x=7/x+5 x-2/3=2x+7/5 7/14=m/21 m+4/2=m-3/5 5/2m+5=2/4m-1

2/m=3/7 3m = 14       / :3  m = 14/3 = 4 i 2/3   a+3/5=7/5 5(a+3) = 35 5a+15 = 35 5a = 35-15 5a = 20  /:5 a = 4   3/x=7/x+5 3(x-5) = 7x 3x - 15 = 7x 3x - 7x = 15 - 4x = 15  / :(-4) x = - 15/4 = - 3 i 3/4 x-2/3=2x+7/5 5(x-2) = 3(2x+7) 5x - 10 = 6x + 21 5x - x = 21 +10 4x = 31   /: 4 x = 31/4 = 7 i 3/4 7/14=m/21 14m =147   / : 14 m = 147/14 = 10 i 7/14 = 10 i 1/2 m+4/2=m-3/5 5(m+4) = 2(m-3) 5m + 20 = 2m - 6 5m - 2m = - 6 - 20 3m = -26     /: 3 m = -26/3 = -8 i 2/3   5/2m+5=2/4m-1 5(4m-1) = 2 (2m + 5) 20m - 5 = 4m + 10 20m - 4m = 10 + 5 16m = 15   /: 16 m = 15/16

2/m=3/7 /*m 2=3m/7 /*7 3m=14/:3 m=14/3=4  2/3