Rozwiąż równania .
d) - (-2 - 1 ) = 4
e) 2 ( x + 1 ) = x
f ) 2 t - ( 3 t + 1 ) = 6
G) - ( 4 + x ) = 2 ( 3 - x )
h) 3 ( y + 6 ) - y = 2 ( y + 9 )
i) ( x - 7 ) - 2 ( 3x + 5 ) = 3
Z góry dzięki ;*)
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e) 2(X+1)=X
2X+2=X
2X-X=-1
X =-1
f) 2t-(3t+1)=6
2t -3t -1=6
-t=6+1
-t=7/:(-1)
t=-7
g) - ( 4 + x ) = 2 ( 3 - x )
-4 -x=6-2x
-x+2x=6+4
x=10
h) 3 ( y + 6 ) - y = 2 ( y + 9 )
3y+18-y=2y+18
3y-y-2y=18-18
0=0
i) ( x - 7 ) - 2 ( 3x + 5 ) = 3
x-7-6x-10=3
-5x=3+7+10
-5x=20/:(-5)
x=-4