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2*x-((7*x)/3)-(3/3) = 4 // - 4
2*x-((7*x)/3)-(3/3)-4 = 0
2*x+(-7/3)*x-4-1 = 0
-1/3*x-5 = 0 // + 5
-1/3*x = 5 // : -1/3
x = 5/(-1/3)
x = -15
x = -15
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