Question

if in equation x+2y=15.the value of xis 5 .then value of y will be?
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Answer 1

Answer:

$x + 2y = 15 \\ x = 5 \\ x + 2y = 15 \\ 5 + 2y = 15 \\ 2y = 15 - 5 \\ 2y =10 \: \: y = 10 \div 2 \: \: y = 5$

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