Answers

2015-06-28T10:43:26+08:00
Write each sentence as an algebraic equation. 
Sentence                                             Algebraic Equation
A number decreased by 45 is 23             a - 45 = 23
Thrice a number is  51                           3b = 51
12 less than a number is 32                   c - 12 = 32 


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2015-06-28T17:33:07+08:00
Subtracting algebraic expressions
(-7xy) -( -8xy)
=-15 xy
negative + negative= negative in subtacting a;gebraic expression
i wish i helped
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