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If x-y =8 find the value of y when x=3
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If x-y =8 find the value of y when x=3

User Sum NL
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1 Answer

5 votes
Answer: y = -5

Substitute in 3 for x.
x - y = 8 Substitution
3 - y = 8 Subtract 3 from both sides
-y = 5 Divide by -1 to both sides
y = -5 Answer!

You can also check your work.
x - y = 8
3 - (-5) = 8
3 + 5 = 8
8 = 8

User Motlicek Petr
by
7.8k points
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