Question

two number differ by 3 and their sum is 9 write linear equetion​

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

$x + y = 9 \\ x = 9 - y\: \: \: \: \: ..........1\\ x - y = 3 \: \: \: \: ...........2 \\ put \: the \: value \: of \: x \: in \: 2 \\ 9 - y - y = 3 \\ 9 - 2y = 3 \\ - 2y = 3 - 9 \\ y = \frac{ - 6}{ - 2} \\ y = 3 \\ put \: the \: value \: of \: y \: in \: 1 \\ x = 9 - 3 \\ x = 6$

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