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Crank
3 years ago
8

The sum of two numbers is 17 and their different is 5. Find two answers

Mathematics
2 answers:
Musya8 [376]3 years ago
4 0
x+ y = 17\\ x=y-5 \\ \\y-5+y=17\\x=y-5\\\\2y=17+5\\x=y-5\\\\2y=22\ \ /:2 \\x=y-5\\\\y=11  \\x=11-5\\ \\y=11  \\x=6 \\\\Answer : \  are \ the \ two \ numbers \ 11 \ and \ 6
vagabundo [1.1K]3 years ago
3 0
x + y = 17 \\ x = y - 5 \\  \\ y - 5 + y = 17 \\ 2y = 17 + 5 \\ 2y = 22 \\ y = 22/2 \\ y = 11 \\  \\ x = y - 5 \\ x = 11 - 5 \\ x = 6 \\  \\  \left \{ {{y=11} \atop {x=6}} \right.
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