Odpowiedź:
Szczegółowe wyjaśnienie:
a) 3x-5=5x-3
3x-5x=-3+5
-2x=2
x=-1
b) 4x-6=6x-4
4x-6x=-4+6
c) 1/2-1/4(x-1)=1/6
1/2-(1/4x-1/4)=1/6
1/2-1/4x+1/4=1/6
-1/4x=1/6-1/2-1/4
-1/4x=2/12-6/12-3/12
-1/4x=-7/12x
x=7/3
x=2 1/3
d) 5(x+3)-10=3(x-4)
5x+15-10=3x-12
5x+5=3x-12
5x-3x=-12-5
2x=-17
x=-8,5
e) 8(x-6)+2-(x+5)=8x-48+2-x-5=-41+7x=7x-41
f) (x+2):2-3=(x+1):4
2(x+2)-12=x+1
2x+4-12=x+1
2x-8=x+1
x=9
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Odpowiedź:
Szczegółowe wyjaśnienie:
a) 3x-5=5x-3
3x-5x=-3+5
-2x=2
x=-1
b) 4x-6=6x-4
4x-6x=-4+6
-2x=2
x=-1
c) 1/2-1/4(x-1)=1/6
1/2-(1/4x-1/4)=1/6
1/2-1/4x+1/4=1/6
-1/4x=1/6-1/2-1/4
-1/4x=2/12-6/12-3/12
-1/4x=-7/12x
x=7/3
x=2 1/3
d) 5(x+3)-10=3(x-4)
5x+15-10=3x-12
5x+5=3x-12
5x-3x=-12-5
2x=-17
x=-8,5
e) 8(x-6)+2-(x+5)=8x-48+2-x-5=-41+7x=7x-41
f) (x+2):2-3=(x+1):4
2(x+2)-12=x+1
2x+4-12=x+1
2x-8=x+1
x=9