Odpowiedź :
3x + x=28
4x=28 |:4
x=7
x-5=1 |+5
x=6
-4x + 8=44 |-8
-4x=36 |:(-4)
x= -9
x-3+x=5 |+3
2x=8 |:2
x=4
9x-2=16 |+2
9x=18 |:9
x=2
1/4x=32 |:1/4
x= 128
7/9x - 3/8x =9
56/72x-27/72x=9
29/72x=9 |:29/72
x=22 10⁄29
3x + x=28
4x=28 |:4
x=7
x-5=1 |+5
x=6
-4x + 8=44 |-8
-4x=36 |:(-4)
x= -9
x-3+x=5 |+3
2x=8 |:2
x=4
9x-2=16 |+2
9x=18 |:9
x=2
1/4x=32 |:1/4
x= 128
7/9x - 3/8x =9
56/72x-27/72x=9
29/72x=9 |:29/72
x=22 10⁄29