AyanahV104385 AyanahV104385
  • 25-10-2022
  • Mathematics
contestada

what is the value of a in the equation 5a – 10b = 45, when b =3?a)3b)15c)21d)39

Respuesta :

AbrinaG10198 AbrinaG10198
  • 25-10-2022

SOLUTION

Given the question, the following are the solution steps to answer the question.

STEP 1: Write the given equation

[tex]5a-10b=45[/tex]

STEP 2: Substitute 3 for b in the equation

[tex]5a-10(3)=45[/tex]

STEP 3: Simplify the equation to solve for a

[tex]\begin{gathered} 5a-30=45 \\ 5a=45+30 \\ 5a=75 \\ a=\frac{75}{5} \\ a=15 \end{gathered}[/tex]

Hence, the value of a is 15

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