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sabrinaaz
28.05.2021 •
Mathematics
Help me please with calculations please :)
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Ответ:
x= -2, y= -7
Step-by-step explanation:
(Solve for y)
-3x+y=-1
1. add 3x to both sides
y=3x-1
(Substitute y=3x-1 into 2x-3y=17)
1. 2x-3(3x-1)=17
2.Simply it (Distributive Property)
3. -7x+3=13
(Solve for x)
1. Subtract 3 from both sides
2. Divide both sides by -7
3. x=-2
(Substitute x=-2 into y=3x-1)
1. y= 3 x -2-1
2. y= -7
Therefore ,
x= -2
and
y= -7