Rozwiąż równania:
a)-(2x-1)=4
b)2(x+1)=x
c)2t-(3t+1)=6
d)-(4+x)=2(3-x)
e)3(y+6)-y=2(y+9)
f)(x-7)-2(3x+5)=3
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a)-2x+1=4
-2x=4-1
-2x=3/:(-2)
x=-1,5
b)2x+2=x
2x-x=-2
x=-2
c)2t-3t-1=6
-t=6+1
-t=7/:(-1)
t=-7
d)-4-x=6-2x
-x+2x=6+4
x=10
e)3y+18-y=2y+18
2y-2y=18-18
0=0
f)x-7-6x-10=3
-5x-17=3
-5x=3+17
-5x=20/:(-5)
x=-4