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7x=35-7
7x=25 :7
x=3
spr: 7*3+7=28+7=35
3.
2-x=5-2x
-x+2x=5-2
x=3
spr: 2-3=5-2*3
-1=5-6
-1=-1
4. nie ma = ;/
5.
1/2x+5=x+8
1/2x-x=8-5
-1/2x=-3
x=6
1. -7b = ⁷₈ | : (-7)
b = -¹₈
2. 7x+7=35
7x=35-7
7x=28 | : 7
x = 4
3. 2-x=5-2x
-x+2x = 5-2
x=3
4. 69-x+x+96 ?????
5. ¹₂x+5 = x+8
¹₂x-x= 8-5
-¹₂x= 3 | : (-¹₂)
x= -6