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Juliianatafur22
24.07.2019 •
Mathematics
What is the solution to the system of equations? use the substitution method. y=2x+4 3x−6y=3
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Ответ:
Revised 2nd equation:
.. x -y = 1
Substituting for y:
.. x -(2x +4) = 1 . . . . . use the expressiion for y in place of y
.. -x -4 = 1 . . . . . . . . . simplify
.. -4 = 1 +x . . . . . . . . . add x
.. -5 = x . . . . . . . . . . . subtract 1
y = 2x +4
.. = 2(-5) +4
.. = -6
The solution is (x, y) = (-5, -6).
Ответ:
+4,000
+600
+80
+7