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mullery7482
16.10.2020 •
Mathematics
CAN SOMEONE ANSWER JUST S4 PLEASE
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Ответ:
9x -18+18=43+18
Step-by-step explanation:
added 18 to both sides
hope this helps good luck :)
Ответ:
x = 13.5 and y = 7
Step-by-step explanation:
Given equations are :
x + y = 20.5 ...(1)
x − y = 6.5 ...(2)
Add equation (1) and (2).
x + y + x- y = 20.5+6.5
2x = 27
x = 13.5
Put the value of x in equation (1).
13.5 + y = 20.5
y = 20.5-13.5
y = 7
Hence, the values of x and y are 13.5 and 7.