Ответ:
1) 5x-7=4
5x=-3
x=-3/5
x=-0,6
2)
-2x=5-14x
-2x+14x=5
12x=5
x=5/12
3)
2x-7=4+x
2x-x=7+4
x=11
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Ответ:
1) 5x-7=4
5x=-3
x=-3/5
x=-0,6
2)
-2x=5-14x
-2x+14x=5
12x=5
x=5/12
3)
2x-7=4+x
2x-x=7+4
x=11