David935
David935
21-02-2016
Mathematics
contestada
substitution
y=× +5
2x-y=-2
Respuesta :
Аноним
Аноним
21-02-2016
We know what y equals already.
y = x + 5
2x - x + 5 = -2
x + 5 = -2
-5 -5
x = -7
y = -7 + 5
y = -2
Now we have our values
Answer: (-7,-2)
or
x = -7
y = -2
Answer Link
lekhagummalla
lekhagummalla
21-02-2016
So, we substitute the y in the second equation to solve for x-value.
2x-(x+5) = -2
2x-x-5 = -2
x-5 = -2
+5 +5
x = 3
As we got the x-value, we now have to find the value of y.
y = x+5
y = 3+5
y = 8
So, the answer is (3,8)
HOPE THIS HELPS!!!!!
Answer Link
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