4x+3=9x-4
+4 +4
4x+7=9x
-4x -4x
7=5x
-------
5
7/5=1.4
1.4=x
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3+6x = 4x+9 6x-4x = 9-3 2x = 6 x = 3
x=3
5+4x-7 = 4x+3-x 4x-2 = 3x+3 4x-3x = 3+2 x = 5
-4x+3 = 23+6x -4x-6x = 23-3 -10x = 20 x = -2
Yes, y = -4x + 3 is a linear equation.