Rozwiąż równania i sprawdź:
a) -3(x-2)-5=3(x+5)+4
b) x-1+2(x-2)+3(x-3)=4(x-2)
c) 2x+30=3x+4
d) 20x-x+5=x+14
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a) -3(x-2)-5=3(x+5)+4
-3x+6-5=3x+15+4
-3x-3x=-6+5+15+4
-6x=18 /-6
x=-3
b) x-1+2(x-2)+3(x-3)=4(x-2)
x-1+2x-4+3x-6=4x-8
x+2x+3x-4x=-8+4+6+1
2x=3 /2
x=1,5
c) 2x+30=3x+4
2x-3x=-30+4
-x=-26 /-1
x=26
d) 20x-x+5=x+14
20x-x-x=-5+14
18x=9 /18x
x=0,5
a) -3(x-2)-5 =3(x+5)+4
-3x+6-5=3x+15+4
-3x -3x=19-6+5
-6x = 18 / -6
x=-3
b) x-1+2(x-2)+3(x-3)=4(x-2)
x-1+2x-4+3x-9=4x-8
x+2x+3x-4x=-8+1+4+9
2x=6/:2
x=3
c) 2x+30 =3x +4
2x -3x=4-30
-x = -26 /-1
x=26
d) 20x-x+5=x+14
19x-x=14-5
18x=9 /:18
x=9/18
x=1/2