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23-05-2019
Mathematics

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What is the value of a in the equation 3a+b=54 , when b=9 ?

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Аноним Аноним

23-05-2019

Use substitution method

3a+9=54

3a+9-9=54-9

3a= 45

divide by 3

3a/3= 45/3

a= 15

Answer is a= 15

Answer Link

23-05-2019

=3a+9=54

=3a=54-9

=3a=45

=a=45/3

therefore a=15

Answer Link

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