rozwiąż równania i uporządkuj rozwiązania :
a)6,4+5x=1
b)7+3y=22-2y
c)-3,5z+4=-4z-7
d)2/3x-3=1+1/5x
e)y+2y-2=1/2y+1
f)4z+8-z+1/2=1/2z-1
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a)
5x=1-6,4
5x= -5,4 :5
x= -1,08
b)
3y+2y=22-7
5y=15 /:5
y=3
c)
-3,5z+4z=-7-4
0,5z=-11 /:0,5
z= -22
d)
2/3x-1/5x=1+3
10/15x-3/15x=5
7/15x=5 /*15/7
x=5*15/7
x=75/7
x=10i5/7
e)
y+2y-1/2y=1+2
2i1/2y=3
5/2y=2 /*2/5
y=2*2/5
y=4/5
f)
4z-z-1/2z= -1-8-1/2
2i1/2z= -9i1/2
5/2z= -19/2 /*2/5
z= -19/2*2/5
z= -19/5
z= -3i4/5