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(1/3)*(7*x+4) = 46/3 // - 46/3
(1/3)*(7*x+4)-(46/3) = 0
(1/3)*(7*x+4)-46/3 = 0
1/3*(7*x+4)-46/3 = 0
(1/3*3*(7*x+4))/3-46/3 = 0
1/3*3*(7*x+4)-46 = 0
7*x-42 = 0
(7*x-42)/3 = 0
(7*x-42)/3 = 0 // * 3
7*x-42 = 0
7*x-42 = 0 // + 42
7*x = 42 // : 7
x = 42/7
x = 6
x = 6
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