Odpowiedź :
Odpowiedź:
1.
a) 3 3/5+x=11
x = 7 2/5
b) 7x = 16
x = 16/7 = 2 2/7
c) 1/9x=-2
x = -18
d)6-x=-2
-x = -8
x = 8
2.
3x − 7 = 47.
3x = 54
x = 18
3.
a) 4 ⋅ 2x − 6 = 6
8x - 6 = 6
8x = 12
x = 12/8 = 1 1/2
b) 5x − 3x + 7 = 3
2x + 7 = 3
2x = -4
x = -2
c) (7x − x):2 = 9
3x = 9
x = 3
d) 1/3x+4-x=6
- 2/3 x + 4 = 6
-2/3x = 2
-2x = 6
x = - 3
- Odpowiedź:
1.
a) 3 3/5 +x=11
18/5+x=11/*5
18+x=55/-18
x=37
b) 7x=16/:7
x=2,3
c)1/9x=-2/:1/9
x=-2*9
x=-18
d)6-x=-2/+6
x=4
2.
3x-7=47/+7
3x=40/:3
x=13.(3)
3.
a)4*2x-6=6
-2*2x=6/+2
2x=8/:2
x=4
b)5x-3x+7=3
8x+7=3/-7
8x=-4/:8
x=-0,5
c)(7x-x):2=9
6x:2=9/*2
6x=18/:6
x=3
d)1/3x+4-x=6
-2/3x+4=6/-4
-2/3x=2/:-2/3
x=2*3/2
x=3