Rozwiąż równanie i sprawdź ich rozwiązania:
a) 3x-2(x+1)=3+3x
b) 5(x-1)+2x=2(x+2)+6
c) 2(4-x)=5(x-1)-1
d) 2(x-1)-5=3(2x-3)-8x
e) 12x-(2x+1)=9(2-x)
f) 3(x+1)-4=2(x-2)+2x
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3x-2(x+1)=3+3x
3x-2x+2=3+3x
x+2=3+3x
x-3x=3-2
-2x=1 |:(-2)
x+-0.5
b) 5(x-1)+2x=2(x+2)+6
5x-5+2x=2x+4+6
7x-5=2x+10
7x-2x=10+5
5x=15 |:5
x=3
c) 2(4-x)=5(x-1)-1
8-2x=5x-5-1
-2x-5x=-5-1-8
-7x=-14 |:(-7)
x=2
d) 2(x-1)-5=3(2x-3)-8x
2x-2-5=6x-9-8x
2x-7=-2x-9
2x+2x=-9+7
4x=-2 |:4
x=-0.5
e) 12x-(2x+1)=9(2-x)
12x-2x+1=18-9x
10x+1=18-9x
10x+9x=18-1
19x=17 |:19
x=¹⁷/₁₉
f) 3(x+1)-4=2(x-2)+2x
3x+3-4=2x-4+2x
3x-1=4x-4
3x-4x=-4+1
-x=-3