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Answer 1 · 2017-03-31T04:40:58

Translated # 15 - ( n +5) # Simplified #10 - n#

decreased translates as a subtraction problems.

sum of a number and five means to add

As 15 is decreased by both the number and five this must be written as a binomial in brackets. hence

# 15- ( n + 5) # To simplify remove the parentheses by distributing the negative sign This equals

# 15 - n - 5# Now group like terms giving

# 15 - 5 -n # This gives

# 10 - n #