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1/2*(8-4x)=5x-1
4-2x=5x-1 / -4
-2x=5x-5 / -5x
-7x=-5 / :7
-x = -5/7 / *(-1)
x = 5/7
(5-(-3))*2-(4+(-3))*2+(-3-3)*(-3+3) = (5+3)*2-1*2-6 = 16-2-6 = 8