Ответы и объяснения

2013-10-05T19:19:41+04:00
1)8x + 6 - 7x -4 = 5
x + 2 = 5
x = 5-2
x =3
2) 0.5x + 1.5 = 0.4x - 2.4 +7.7
    0.5x - 0.4x = 5.3 - 1.5
x = 3.8 : 0.1
x = 38
2013-10-05T19:21:37+04:00
1)8x+6-7x -4=5
x+2=5
x=5-2
x=3
2) 0.5x+1.5=0.4x - 2.4 +7.7
    0.5x-0.4x = 5.3-1.5
x = 3.8 : 0.1
x = 38