Rozwiąż równania.. Proszę to na jutro.. Liczę na naj :) 1. (x+(2x+4)=3 2. x+(2x+4)=3 3. 3-(x-4)=5 4. x-(2x+1)+3=7 5. 2(x+4)-5= -7 6. 2x+3-(3x+2)= -1 7. 3(x+2)-5x=3
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1.(x+(2x+4)=3
x+2x+4=3
3x=3-4=-1
x=-1/3
2. =1.
3.3-(x-4)=5
3-x+4=5
-x=5-4-3=-2 |:1
x=2
4. x-(2x+1)+3=7
x-2x-1+3=7
-x=7-3+1=5 |:1
x=-5
5.2(x+4)-5=-7
2x+8-5=-7
2x=-7-8+5=-10|:2
x=-10/2
x=-5
6. 2x+3-(3x+2)=-1
2x+3-3x-2=-1
-x=-3+2-1=-2 |:-1
x=2
7. 3(x+2)-5x=3
3x+6-5x=3
-2x=-6+3=-3 |:-2
x=3/2=1 i 1/2
1. (x+(2x+4) = 3
x+ 2x+ 4 = 3
3x = 3-4
3x = -1/:3
x = - 0,3
2. x + ( 2x +4 ) = 3
x + 2x + 4 = 3
3x = 3 - 4
3x = -1 /:3
x = - 0,3
3. 3 - ( x - 4 ) = 5
3-x + 4 = 5
x = -3 - 4 + 5
x= -2
4 .x - ( 2x +1) + 3 = 7
x- 2x-1 + 3 =7
x - 2x = 7 + 1 - 3
x = 5
5. 2 ( x+4 )- 5= -7
2x + 8 -5 = -7
2x = - 7 - 8 + 5
2x = -10 /:2
x=-5
6. 2x + 3 - (3x + 2 ) = -1
2x + 3 - 3x - 2 = -1
2x - 3x = -1 - 3 +2
-x= - 2/:-1
x = 2
7. 3(x + 2) - 5x = 3
3x + 6 - 5x = 3
3x- 5x = 3 - 6
-2x = -3 / :-2
x = 1,5
(jaK jest przed nawiasem minus to wszystkie znaki zmieniamy na przeciwne )