Równania :
1. -7x + 5 = 11x + 41
2. 36x - 14 = 14x - 36
3. 3x - 4 = 4x
4. -27x + 1 = 2x + 59
5. 45x - 19 = 19x - 45
Oblicz :
1. (17,8 + 2,48) * 5,05 - 13,85 * 4,2 =
2. 2,75 + 34,25 * (57,6 - 7,6 * 7,5) =
3. 72,3 - 2,05 * (6,03 * 5,4 - 30,062) =
* = razy (mnożenie)
Proszę o obliczenia i szybkie rozwiązanie.. ;)
Dziękuję :)
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1. - 7x + 5 = 11x +41
- 7x - 11x = 41 - 5
- 18x = 36 /: (-18)
x = - 2
2.
36x - 14 = 14x - 36
36x - 14x = - 36 + 14
22x = - 22 /:22
x= - 1
3.
3x - 4 = 4x
3x - 4x = 4
- x = 4 /:(-1)
x= - 4
4.
-27x + 1 = 2x + 59
- 27x - 2x = 59 - 1
- 29x = 58 /:(-29)
x = - 2
5.
45x - 19 = 19x - 45
45x - 19x = -45 + 19
26 x = -26 /: 26
x= -1
1. -7x + 5 = 11x + 41 / - 5
-7x = 11x + 41 - 5 / -11
-7x - 11x = 41 - 5
-18x = 36 / : (-2)
x = -2
2. 36x - 14 = 14x - 36 / +14
36x = 14x - 36 + 14 / -14x
36x - 14x = -36 + 14
22x = -22 /:22
x = -1
3. 3x - 4 = 4x / +4
3x = 4x + 4 / - 4x
3x - 4x = 4
-x = 4 / * (-1)
x = -4
4. -27x + 1 = 2x + 59 / -1
-27x = 2x + 59 - 1 / -2x
-27x - 2x = 59 - 1
-29x = 58 / : (-29)
x = -2
5. 45x - 19 = 19x - 45 / + 19
45x = 10x - 45 + 19 / -10x
45x - 10x = -45 + 19
35x = -26 / : 35
x =
Proszę ;) Liczę na najlepszą. Pozdrawiam.