carsyn2016
11.09.2020 •
Mathematics
What is
3x-2y=9
y=2x-7
Solved
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Ответ:
3x-2(2x-7)=9
3x-4x+14=9
-1x=-5
x=5
next solve for y
y=2x-7
y=2(5)-7
y=10-7
y=3
And now we have x=5, and y=3.
Ответ:
3x - 2y = 9
3x - [2(2x-7)]= 9
3x - (4x - 14) = 9
3x - 4x + 14 = 9
-x + 14 = 9
-x = -5
x = 5
y = 2x - 7
y = 2(5) - 7
y = 10 - 7
y = 3
Ответ:
Step-by-step explanation: