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Mathematics, 30.09.2019 01:30 saggirl1209

Are the equations sometimes, always, or never true?
a. 15 + 2x − 4 = 9x + 11 − 7x
b. 2x + 3(4x − 1) = 2(5x + 3) + 4x

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Are the equations sometimes, always, or never true?
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