Odpowiedź:
b) (x+1)/2-(x-1)/3= 1/4 /·12
6(x+1)-4(x-1)= 3
6x+6-4x+4= 3
2x= 3-10
2x= -7 /: 2
x= -7/2= -3 1/2
c) (4x+7)/2-(5x-1)/6= x+5 /· 6
3(4x+7)-(5x-1)= 6x+30
12x+21-5x+1= 6x+30
7x-6x= 30-22
x= 8
d) (x+5)/4-(2x+1)/8= 1/2(2-x) /· 8
2(x+5)-(2x+1)= 4(2-x)
2x+10-2x-1= 8-4x
4x= 8-9
4x= -1 /: 4
x= -1/4
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Odpowiedź:
b) (x+1)/2-(x-1)/3= 1/4 /·12
6(x+1)-4(x-1)= 3
6x+6-4x+4= 3
2x= 3-10
2x= -7 /: 2
x= -7/2= -3 1/2
c) (4x+7)/2-(5x-1)/6= x+5 /· 6
3(4x+7)-(5x-1)= 6x+30
12x+21-5x+1= 6x+30
7x-6x= 30-22
x= 8
d) (x+5)/4-(2x+1)/8= 1/2(2-x) /· 8
2(x+5)-(2x+1)= 4(2-x)
2x+10-2x-1= 8-4x
4x= 8-9
4x= -1 /: 4
x= -1/4
Szczegółowe wyjaśnienie: