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Fernanda Meyers
Mathematics
15 April, 10:01
Solve this: 2x+y=-7y Y=x+10
+2
Answers (
2
)
Bennett Mcgrath
15 April, 10:18
0
In this equation, when x = - 8, Y = 2
Answer check using either equation =
(1) 2x + y = - 7y = ==> 2 (-8) + 2 = - 7 (2) = ==> - 14 = - 14
(2) Y = x + 10 = ==> 2 = - 8 + 10 = ==> 2 = 2
Step-by-step explanation:
Assuming that you are looking for "x" and "y", Let
2x + y = - 7y ... (1)
Y = x + 10 ... (2)
From equation (2), Y = x + 10, therefore substitute for "Y" in equation (1) to get the value of "x"
2x + x + 10 = - 7 (x + 10)
3x + 10 = - 7x - 70
gather like terms on each side.
3x + 7x = - 70 - 10
10x = - 80
divide through by 10
x = - 8
Now substitute for "x" in equation (2)
Y = x + 10
Y = - 8 + 10
Y = 2
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Riley Davila
15 April, 10:24
0
I think it y=-9 cuz
Let's solve for x.
2
x
+
y
=
-
7
y
Step 1: Add - y to both sides.
2
x
+
y
+
-
y
=
-
7
y
+
-
y
2
x
=
-
8
y
Step 2: Divide both sides by 2.
2
x
2
=
-
8
y
2
x
=
-
4
y
Answer:
x
=
-
4
y
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