You can
put this solution on YOUR website!"the sum of two numbers is 180" translates to
"twice the first number increased by forty is equal to to twice the second number" translates to
Start with the second equation
Divide both sides by 2 to isolate y
Break up the fraction.
Reduce
So after isolating y, we get
Go back to the first equation
Plug in
Combine like terms on the left side.
Subtract
from both sides.
Combine like terms on the right side.
Divide both sides by
to isolate
.
Reduce. So this is the first answer.
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Go back to the isolated equation
Plug in
Add. This is the second answer.
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Answer:
So the solutions are
and
which means that the two numbers are 80 and 100
