Bonsoir,
x
x+1
x+2
x+139 = 2(x+2)
x+139 = 2x+4
139 -4 = 2x-x
135 = x
=> 135, 136, 137
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Bonsoir,
x
x+1
x+2
x+139 = 2(x+2)
x+139 = 2x+4
139 -4 = 2x-x
135 = x
=> 135, 136, 137