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15 -25 -30 /5 6 - 7 - 8 /2 pero estas si estan bien
3 -5- 6 /3 3 -7 -4 /2 cuidate
1 -5 -2 /2 3 -7 -2 /2
1 -5 -1/5 3 - 7 -1 /3
1 -1 -1 1- 7- 1 /7
mcm 450 1 -1 -1
mcm 336
45 = 3²×5
75 = 3×5²
90 = 2×3²×5
mcm (45,75,90) = todos los factores elevados al máximo exponente = 2×3²×5² = 450
mcd (45,75,90) = factores comunes elevados al menor exponente = 3×5 = 15
B)
12 = 2×3
14 = 2×7
16 = 2⁴
mcm (12,14,16) = 2⁴×3×7 = 336
mcd (12,14,16) = 2
C)
9 = 3²
15 = 3×5
mcm (9,15) = 3²×5 = 45
mcd (9,15) = 3
Te adjunto hoja de la descomposición de los números en fctores primos