kekoanabor19
15.01.2021 •
Mathematics
One number is nine less than a second number. Five times the first is 1 more than 3 times the second. Find the numbers.
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Ответ:
D. 10x-20
Step-by-step explanation:
The perimeter is just all four sides added together
(3x-2)+(3x-2)+(2x-8)+(2x-8)
add together like terms
3x+3x+2x+2x=10x
-2+-2+-8+-8=-20
write in order
10x-20