PROSZĘ POMÓRZCIE POTRZEBUJE TO NA DZISIAJ
1. 3(1-x)+2=-7
2. 3(x+3)=2(x+4)+x+1
3. 4(3x+2)+5(2x+3)=-(2x+13)
4. 4(x-2)-2(x-4)=5(x+1)-3x
5. y/2+1/3=7/6
6. (y+3)/2-(1-y)=3,5
7. (2y+4)/4=1/2y+1
8. (y-2)/3+1/15-(2y-5)/3=(8-4y)/5
9. 0,2x+0.3=1,3
10. 0,8-5x=-0,1-2x
11. 0,01x+17=-0,16x
12. 3/4(x-2)=x+1
13. -0,07(10x-1)=0,3x
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
1.
3(1-x)+2=-7
3-3x+2=-7
-3x=-7-5
-3x=-12 /:(-3)
x=4
2.
3(x+3)=2(x+4)+x+1
3x+9=2x+8+x+1
3x-2x -x =9-9
0=0
3.
4(3x+2)+5(2x+3)=-(2x+13)
12x+8+10x+15=-2x-13
22x+2x=-13-23
24x=-36
x=-1,5
4.
4(x-2)-2(x-4)=5(x+1)-3x
4x-8-2x+8 =5x+5 -3x
2x-2x=5
0=5
5.
y/2+1/3=7/6 /·6
3y+2=7
3y=5 /:3
y=5/3=1⅔
6.
(y+3)/2-(1-y)=3,5 /·2
y+3 -2(1-y)=7
y+3-2+2y=7
3y=7-1
3y=6 /:3
y=2
7.
(2y+4)/4=1/2y+1 /·4
2y+4 =2y+4
2y-2y=4-4
0=0
8.
(y-2)/3+1/15-(2y-5)/3=(8-4y)/5 /·15
5(y-2)+1-5(2y-5) =3(8-4y)
5y-10+1 -10y+25=24-12y
-5y +12y=24-16
7y=8
y=8/7=1¹/₇
9.
0,2x+0.3=1,3
0,2x=1.3-0,3
0,2x=1
x=1:0,2
x=5
10.
0,8-5x=-0,1-2x
-5x+2x=-0,1-0,8
-3x=-0,9 /:(-3)
x=0,3
11.
0,01x+17=-0,16x
0,01x+0,16x=-17
0,17x=-17
x=-100
12.
3/4(x-2)=x+1
0,75x-1,5=x+1
0,75x-x =1+1,5
-0,25x=2,25
x=-9
13.
-0,07(10x-1)=0,3x
-0,7x+0,07 =0,3x
-0,7x-0,3x =-0.07
-x =-0,07 /:(-1)
x=0,07