patulong po sa may alam
(tnx in advanced)
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Answer:
Example:
6n+9= 6(-5)+9
= -30 +9
=-21
I substitute mo lang ang letters sa numbers na ibinigay tapos kung natapos mo nang isubstitute lahat i calculator mo nalang
Example: What is the value of 7b when b = 2
so ang pag solve niyan is i replace mo lang yung b ng 2 dahil b is equivalent to 2 sa given so 7b is magiging 7 × 2 or 7(2) so ang answer is 14. Simple substitution lang yan I hope this helps