Question

Oblicz nieznaną liczbe

2x=3
-
4


2.
5:x=3
-
4




3.
2 1 -x=3
- -
2 5




4.
x+7 2= 10
-
3

Answer 1

2/4x=3 
1/2 x = 3  mnożymy obustronnie przez 2
x=6
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5/4 :x=3
x = 5/4 :3
x = 5/4 * 1/3
x=5/12
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2 1/5 -x=3
2 1/5 -3=x
- 4/5 =x
x= -4/5

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x + 7 2/3 = 10
x=10 - 7 2/3
x = 2 1/3
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