Find the value of y if x equals 20? -2x+4y=-4

Mathematics

2 answers:

sammy [17]4 years ago

4 0

x=20

-2(20) + 4(y) =-4

-40+4y=-4

-4y=-36

y=9

Digiron [165]4 years ago

3 0

Y= 9

-2(20)+4y=-4
-40+4y=-4
-36=-4y
9=y

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