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7x = 14
x = 14/7
x = 2
5x + 3 = 17 - 2x
5x + 2x = 17 - 3
7x = 14
x = 14/7
x = 2
Verificacíon.
5x + 3 = 17 - 2x
5(2) + 3 = 17 - 2(2)
10 + 3 = 17 - 4
13 = 13