The answer is 15w^2 + 225w
Key:
^ - Means that it is an exponent, in case you didn't know :)
3,7 corresponding 2,7 exterior
4,5 & 3,6 interior
Jiri’s age is 43
Pamela is 5 years younger mean
Mean Jiri is old 5 years, take number of Jiri age minus Pamela age.
-> J-5=P
The sum mean plus
P+J=81
Use substitution for the equation 1 to find the answer.
(J-5) +J=81
2J-5=81
2J=86
J=43