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M: minuendo
S: sustraendo
D: diferencia
M+S+D= 5400
M-S= D
Sustituyendo D
M+S+M-S= 5400
2M= 5400 (La suma de términos=2M)
M= 5400/2
M=2700
M= 3S ---> S= M/3
S= M/3
S= 2700/3
S= 900
La diferencia:
M-S= D
2700-900= 1800
R. La diferencia es 1800