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3x - 7x = 32 + 4
-4x = 36
x = -9
3. - 2 = 2
x - 5 = 4
x = 9
4.
11 x = 330
x = 30
5.
3 (x - 3) = 2 (2x -4)
3x - 9 = 4x -8
3x - 4x = -8 + 9
-x = 1
x = -1