POMOCY !!!!!!!!!!
1) 1 4/5 X - 1/5=3/4
2) 2 1/2X +3=7 1/3
3) 3x + 1/3 =7
1)
1 4/5 x - 1/5=3/4
9/5x = 3/4 + 1/5
9/5x = 15/20 + 4/20
9/5x = 24/20 /*5/9
x = 8/12 = 2/3
2)
2 1/2x +3=7 1/3
5/2x = 7 1/3 - 3
5/2x = 4 1/3 = 13/3 /*2/5
x = 26/15 = 1 11/15
3)
3x + 1/3 =7
3x = 7 - 1/3
3x = 6 2/3 /:3
x = 20/3 * 1/3 = 20/9
x = 2 2/9
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1)
1 4/5 x - 1/5=3/4
9/5x = 3/4 + 1/5
9/5x = 15/20 + 4/20
9/5x = 24/20 /*5/9
x = 8/12 = 2/3
2)
2 1/2x +3=7 1/3
5/2x = 7 1/3 - 3
5/2x = 4 1/3 = 13/3 /*2/5
x = 26/15 = 1 11/15
3)
3x + 1/3 =7
3x = 7 - 1/3
3x = 6 2/3 /:3
x = 20/3 * 1/3 = 20/9
x = 2 2/9