5x = 4x + 9
x = 9
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6 + 2x = 5x + 9 , 6 - 9 = 5x - 2x , -3 = 3x , x = -1
(5x 2 - 8x + 1) + (2x 2 - 4x - 11)
4x+9=25 4x+9=25-9 4x/4=1 16/4=4 4x+9=26 4(4)+9=25 16+9=25 The answer is 4
If: 5x+2y = 9 Then: y = -2.5x+4.5 in slope intercept form
if you meant 5x+9=3*15 then, 5x = 36, x = 7.2 if you meant 5x+9=3x+15 then, 2x = 6, x = 3