X/7 = 6
multiply both sides by 7/1
(7/1)(X/7) = (6)(7/1)
7 cancels on left
X = 42
----------------check in original equation
42/7 = 6
6 = 6
----------checks
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7/2x = 3 Multiply both sides by 2x: 7 = 3*2x = 6x Divide both sides by 6 = 7/6 = x ie x = 1.1666...
7x-6=20 You add 6 to both sides of the equal sign to get 7x=26. Then you divide both sides by 7 to isolate "x". x=26/7
5.5 x 6 x 7 = 231
8x + 7 = 55 Subtract 7 from both sides: 8x = 48 Divide both sides by 8: x = 6
6-x+12 = 10x+7 6+12-7 = 10x+x 11 = 11x x = 1