Question

Równania !! Mam problem z rozwiązaniem !!

0,6 - 3/4x = - 1/3

1/10(25x - 40) - 3/4(8x + 12) +2 = - 9

Answer 1

0,6 - 3/4 x= -1/3
-3/4x= -1/3-6/10
-3/4x- -10/30-18/30
-3/4x=-28/30
x= 23/30 :3/4
x=56/45

Answer 2

0,6 - 3/4x = - 1/3
-3/4x= - 1/3 - 3/5
-45/60x = -20/60 - 36/60
45/60x = 56/60
x=56/45 = 1 i 11/45

1/10(25x - 40) - 3/4(8x + 12) +2 = - 9
2,5x-4-6x-9+2=-9
-3,5x=2
x=-2/3,5 = -4/7

Answer 3

0,6-3\4x=-1\3
-3\4x=-1\3-0,6
-3\4x=-1\3-6\10
-3\4x=-1\3-3\5
-3\4x=-5\15-9\15
-3\4x=-16\15 /*(-4\3)
x=64\45
x=1 19\45

1\10(25x-40)-3\4(8x+12)+2=-9
25\10x-4 - 24\4x-36\4=-9-2
2,5x - 4 - 6x - 9= -11
-3,5x - 13 = -11
-3,5x=2 /*(-10\35)
x=-20\35
x=-4\7