12 - 4x = 2
4x = 12 - 2 = 10
x = 10/4 = 21/2 or 2.5
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124x = 7 Divide both sides by 124: x = 7/124 = 0.056
At the x-intercept, y=0 so...2y - 4x = -122(0) - 4x = -12-4x = -124x = 12x = 12/4x = 3
5x-8 = x+125x-x = 8+124x = 20x=5
4x - 7y = 12-7y = -4x + 12y = (4/7)x - (12/7)======================4x - 7y = 124x = 7y + 12x = (7/4)x + 3
I assume you mean 3x - 8 = 12 - xif we move the x's to one side and the numbers to the other side:3x - 8 + x = 12 - x + x4x - 8 = 124x - 8 + 8= 12 +84x = 204x/4 = 20/4x = 5I hope that answers your question but if you would like further information please email me at charris321@wikianswers.com