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4x + 3 cannot equal 4x + 12:4x + 3 = 4x + 12 (given)3 = 12 (subtract 4x from both sides)
The algebraic formula [-4x - 3 = 17]is equal to -4x = 204x = -20x = -5
8x + 15
-9 < 4x + 3 < 11 Subtract 3 from each expression: -12 < 4x < 8 Divide each term by 4: -3 < x < 2
Depending on what your question was, there are different answers: 4x + 4 = 7x - 3 7x - 4x = 4+3 3 x = 7 x =7/3 or 4x + 47x -3 = 0 51x = 3 x = 3/51 x=1/17