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4x - 8 + 36 = 90 + x + 4
4x + 28 = 94 + x
4x - x = 94 - 28
3x = 66
x = 66/3
x = 22
Solución :
x = 22
VERIFICAMOS :
(x - 2) * 4 + 36 = 45 * 2 + x + 4
(22 - 2) * 4 + 36 = 45 * 2 + 22 + 4
88 - 8 + 36 = 90 + 22 + 4
124 - 8 = 116
116 = 116
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