It is number 1 and number 4
Answer:
Todas las respuestas están resaltadas en negritas.
Explanation:
4/7 + 8/12 + 3 1/9
Particularmente:
3 1/9 = 3 + 1/9 = 27/9 + 1/9 = 28/9
Para poder sumar más fácilmente estas fracciones se recomienda que los denominadores sean iguales utilizando fracciones equivalentes, es decir, que tengan el mismo valor, lo cual se logra de la siguiente forma:
Sabemos que todo número multiplicado por 1 nos da como resultado el mismo número:
1*(4/7) = 4/7
También sabemos que todo número dividido entre si mismo da como resultado 1:
36/36 = 1
Entonces:
1*(4/7) = (36/36)(4/7) = (36*4)/(36*7) = 144/252
4/7 es equivalente a 144/252
En el mismo sentido:
8/12 es equivalente a 168/252
3 1/9 es equivalente a 784/252
Por tanto:
4/7 + 8/12 + 3 1/9 = 144/252 + 168/252 + 784/252 = 1096/252
= 1008/252 + 88/252 = 4 + 88/252 = 4 + 22/63
= 4 22/63
Mínima expresión de 128/32
128/32 = 64/16 = 32/8 = 16/4 = 8/2 = 4/1 =4
= 4
De mayor a menor:
9/2, 12/5, 7/4
2x + 6 = 5x - 24
2x - 5x = -24 - 6
-3x = -30
x = -30/-3
x = 10
Comprobación::
2*10 + 6 = 5*10 - 24
20 + 6 = 50 - 24 = 26
Respuesta:
x = 10
Explanation:
1. d
2.a
3.c
4. b.
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