savannahsims5847
29.07.2019 •
Mathematics
Urgent 30 points! solve. {y=x−75x+2y=7 use the substitution method.
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Ответ:
Here is your answer, my good sir, or maiden.
Ответ:
5x + 2y = 7 (2)
Sub (1) into (2):
5x + 2(x -7) = 7
5x + 2x - 14 = 7
7x - 14 = 7
7x = 7 + 14
7x = 21
x = 3 -sub into (1)
y = x - 7
y = 3 - 7
y = -4
Ans: x = 3, y = -4
Ответ:
idk
Step-by-step explanation: