Oblicz:
2(x+2)=5(2x+3)-5=
3+2(x+7)=4
2(x-3)-4(2x+5)=3(3x-1
2(2x+1)=3(x-3)
5x-5(x+3)=4
2x-3(x+2)=1
4(2x+3)-2(2x+3)=2
x+3(x-1)=2x-3(x-1)
2x-5(3x-5)+3=4(2x-5)
x+2(3x-5)=2(3x-5)-7
Plis mam to na jutro xdd :D
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1)
2(x+2)=5(2x+3)-5
2x+4=10x+15-5
-8x=6 /:-8
x=3/4
2)
3+2(x+7)=4
3+2x+14=4
2x=-13 /:2
x=-13/2
3)
2(x-3)-4(2x+5)=3(3x-1)
2x-6-8x-20=9x-3
-15x=23 /:-15
x=-23/15
4)
2(2x+1)=3(x-3)
4x+2=3x-9
x=-11
5)
5x-5(x+3)=4
5x-5x-15=4
0x=19
x∈R
6)
2x-3(x+2)=1
2x-3x-6=1
-x=7 /:(-1)
x=-7
7)4(2x+3)-2(2x+3)=2
8x+12-4x-6=2
4x=-4 /:4
x=-1
8)x+3(x-1)=2x-3(x-1)
x+3x-3=2x-3x+3
5x=6 /:5
x=5/6
9)
2x-5(3x-5)+3=4(2x-5)
2x-15x+25+3=8x-20
-21x=-48 /:-21
x=16/7
10)
x+2(3x-5)=2(3x-5)-7
x+6x-10=12x-10-7
-5x=-7 /:-5
x=7/5
2(x+2)=5(2x+3)-5=
2x+4=10x+15-5 /+5
2x+9=10x+15/-10x
-8x+9=15/-9
-8x=6/*(-8)
x=-48
3+2(x+7)=4
3+2x+14=4
2x+17=4\-17
2x=-13 /:2
x=-6,5
2(x-3)-4(2x+5)=3(3x-12(2x+1)=3(x-3)
2x-8x-20=3(3x-24x-1)=3x-9
6x-20=9x-72x-3=3x-9 /+20
6x=-63x+17=3x+11/+63x
69x=17=69x+11/-11
69x=6=69x /69
x=⁶/₆₉=x
5x-5(x+3)=4
5x-5x-15=4
-15=4
2x-3(x+2)=1
2x-6x-6=1
4x-6=1/4
x-1,5=0,25+1,5
x=1,75
4(2x+3)-2(2x+3)=2
8x+12-4x+6=2
4x+18=2/-18
4x=-16/4
x=-4
x+3(x-1)=2x-3(x-1)
x+3x-3=2x-3x-3
4x-3=x-3/x
5x-3=-3/+3
5x=0\5
x=0
2x-5(3x-5)+3=4(2x-5)
2x-15x-25+3=8x-20
-13x-22=8x-20/+22
-13x=8x+2/+13x
0=21x+2/-2
0=21x/21
x=0
x+2(3x-5)=2(3x-5)-7
x+6x-10=6x+10-7/-6x
x-10=10-7/+10
x=13
nie wiem czy to jest dobrze ale chyba tak ;P