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-5x=14 / :-5
x=-2,8
B:
-3x=-7 /:-3
x=2,(3)
C:
2/3x=8 / *3
2x=24 ? : 2
x=12
D:
0,8x=-10 / :0,8
x=-12,5
---------------------
A:
7x +15+2*3x=10
7x+15+6x=10
13x=-5 /:13
x=-0,3846153846
B:
12x+12-9x=15
3x=3 /:3
x=1
C:
5x-17-2,(6) x=-20
2,(3)x=-20
x=-8,57
D:
3x-6:2=7
3x-3=7
3x=10
x=3,(3)
Mam nadzieje że pomogłam