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3/8X = 17 - 5
3/8X = 2
X = 2/1/3/8
X = 16/3
b. 7X = 105
X = 105/7
X = 15
c. 5/2X = 8
X = 8/1/5/2
X = 16/5
d. X/4 = 14
X = 14 * 4
X = 56
e. 3X + 6 = 33
3X = 33 - 6
3X = 27
X = 27/3
X = 9
f. -2X + 4 = 6
-2X = 6 - 4
-2X = 2
X = 2/-2
X = 1
Los 2/3 de un numero es equivalente a 40 ¿cual es el numero?
Para saberlo dividimos 40 ÷ 2/3 =120/2 = 60
Comprobamos: 60 * 2/3 = 120/3 = 40
Respuesta: El numero es 60