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2x + 3 = 4x - 7 <=> 4x - 7 = 2x + 3 <=> 2x = 10 <=> x = 5 - - - 2x + 3 = 4x - 7 Take the 2x from each side of the equation. 3 = 2x - 7 Get the numerals together 7 + 3 = 2x Therefore 10 = 2x Therefore 5 = x
2x+3 = 7 2x = 7-3 2x = 4 x = 2
2x+3<7 2x<7-3 2x<4 x<2
7 and 3 - 2x are factors of 21 - 14x
2x + 7 = 10 2x + 7 - 7 = 10 - 7 2x = 3 2x/2 = 3/2 x = 1 1/2 OR 1.5 The answer is 1 1/2, also written as 1.5