deejay4354
24.08.2019 •
Mathematics
Solve the linear system
1).5x + 4y = 16
y = -16
2). 3x + 6y = 15
-2x + 3y = -3
3). 7y = -14x + 42
7y = 14 x + 14
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Ответ:
5x+4(-16)=16
5x-64=16
5x=80
x=16
2.3x+6y=15
-2x+3y=-3
Multiply the 2nd equation by 2
3x+6y=15
-4x+6y=-6
7x=9
x=9/7
3x+6y=15
3(9/7)+6y=15
27/7+6y=15
6y=78/7
y=78/42 or 39/21 or 13/7
3.7y = -14x + 42
7y = 14 x + 14
-14x+42=14x+14
-28x=-28
x=1
Ответ:
Ответ:
YA TYYY IM EARL BEFORE EVERYBOD