25x+1=33x+7
25x=33x+6
-8x=6
x=-8/6
x=-4/3
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3x + 5x = 2x + 28x = 2x + 26x = 2x = (2/6) = 1/3
3x+2 = 5x so 2x = 2 and hence x = 2/2 = 1
-15x2+5x=-5x(3x-1)
5x(3x + 1)
y = 2x -1 y = 5x -13 So: 5x -13 = 2x -1 5x -2x = 13 -1 3x = 12 x = 4 and by substituting y = 7