Question

What is the value of a in the equation 5 a minus 10 b equals 45, when b equals 3?Which shows the correct solution of the equation, when ?

Answer 1

Answer:

for answer see image ......

Answer 2

Answer:

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Explanation:

$5a - 10b = 45 - - - - - - (1) \\ b = 3 - - - - - - - (2) \\ value \: of \: {b} \: put \: in \: (1) \\ 5a - 10 \times 3 = 45 \\ 5a = 45 + 30 \\ = > a = \frac{75}{5} \\ = > a = 15$

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