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2x-(-4-3x) = 2x+4+3x = 5x+4
b)
10-2(t+1) = 10-2t-2 = 8-2t
c)
-3(2y+1/3)+4y = -6y-1+4y = -2y-1
d)
-6(1-0,5u)+3u/2 = -6+3u+1,5u = 4,5u-6
e)
2(3w-1)-(w+2)/2 = 6w-2-0,5w-1 = 5,5w-3
f)
3(a-2b)-5(b-2a) = 3a-6b-5b+10a = 13a-11b