September 2018 1 21 Report
Averigüen el valor de la incógnita en cada una de las siguientes ecuaciones:
a) -2 + x - (-3) = 7 + 2 * 3
b) 4x + (-7) = 5
c) -x - (-10) = -8
d) x * (-3) = -18 + (-6)
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