aashna66
26.02.2021 •
Mathematics
Solve the following system of linear equations. 3x − 5y = −39 6x + 2y = −42
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Ответ:
x=-8, y=3. (-8, 3).
Step-by-step explanation:
3x-5y=-39
6x+2y=-42
-2(3x-5y)=-2(-39)
6x+2y=-42
-6x+10y=78
6x+2y=-42
12y=36
y=36/12=3
3x-5(3)=-39
3x-15=-39
3x=-39+15
3x=-24
x=-24/3=-8
Ответ: