а) 3,6x - 4,5 = 15,33,6x = 15,3 + 4,53,6x = 19,8x = 19,8 / 3,6x = 5,5
б) 0,4(x - 1,6) = 3,240,4x - 0,64 = 3,240,4x = 3,24 + 0,640,4x = 3,88x = 3,88 / 0,4x = 9,7
в) 5 целых 4-ре 9-ых - 2-ве 9-ых х = 3 целых 1-одна 3-тих5 + 4/9 - 2/9x = 3 + 1/35 + 4/9 - 2/9x = 3 + 1/35 + 4/9 - 2/9x = 3 + 1/349/9x = 161/9x = 161/49x = 3 целых 1-одна 3-тих
а) 3,6x - 4,5 = 15,3
3,6x = 15,3 + 4,5
3,6x = 19,8
x = 19,8 / 3,6
x = 5,5
б) 0,4(x - 1,6) = 3,24
0,4x - 0,64 = 3,24
0,4x = 3,24 + 0,64
0,4x = 3,88
x = 3,88 / 0,4
x = 9,7
в) 5 целых 4-ре 9-ых - 2-ве 9-ых х = 3 целых 1-одна 3-тих
5 + 4/9 - 2/9x = 3 + 1/3
5 + 4/9 - 2/9x = 3 + 1/3
5 + 4/9 - 2/9x = 3 + 1/3
49/9x = 161/9
x = 161/49
x = 3 целых 1-одна 3-тих