banna01man
22.06.2019 •
Mathematics
Given the equations `2x + 4/3 y = 1` and `y - 9/13 x = 9`, by what factor would you multiply the first equation so that combining the two equations would eliminate x? a. `-9/26` b. `9/26` c. `1/2` d. `-9/13`
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Ответ:
B. 9/26.
Step-by-step explanation:
You need to change the coefficient of x in the first equation to 9/13 so that adding the 2 equations would eliminate x.
So you would multiply by
= 9/13 / 2
= 9/13 * 1/2
= 9/26 (answer)
Ответ:
Step-by-step explanation:
7.7777