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4t-4=t+5
4t-t=5+4
3t=9/:3
t=3
odp. D
A. ⅓x-2=5-⅔x
1/3x+2/3x=7
x=7
B.⅔x+2=⅓9x+9
Tu nie wiem ; ) Chyba źle napisane ^^
C.x-4=3(2x+5)
x-4=6x+15
-5x= 19/ (-5)
x= - 3 i 4/5
D.4x+2=5x-(x-1)
4x+2=5x-x+1