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3 years ago

12x−5y=−20 y=x+4

2 answers:

8 0

12x-5y=-20
y=x+4
Subtract x to each side
y-x=x+4-x
y-x=4
-x+y=4
Multiply -12 to each side
-12(-x+y)=4(-12)
12x-12y=-48
Use substitute property:
12x-12y=-48
-
12x-5y=-20
=
-7y=-28
Divided -7 to each side
-7y/-7=-28/-7
y=4
y=x+4
Substitute y with 4
4=x+4
Subtract both side by 4
4-4=x+4-4
x=0. As a result, the solution to these equations is (0,4). Hope it help!

Alborosie3 years ago

7 0

X = 0
y = 4
(0 , 4) as an ordered pair

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​ ​ ​ ​​ ​12x−5y=−20 ​y=x+4 ​​

12x−5y=−20 y=x+4