Question

15-5y=20

what is the value of y?

Answer 1

1

Explanation:

`swap \: - 5y \: and \: 15`

working step:

`</p><p>15+−5y=20 \\ </p><p></p><p>−5y+15=20 \\ </p><p></p><p>−5y+15−15=20−15 \\ </p><p></p><p>−5y=5 \\ </p><p></p><p>−5y−5=5−5 \\ </p><p>y=−1</p><p></p><p>`

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Answer 2

15-5y=20

15-20=5y

-5=5y

y=-1