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