Question 196293
Let L=longest side, s=shortest, b=in between side.
a) L+b+s=105
b) L=s+22
c) b+s=L+15
c) b+s=s+22+15 substitute s+22 for L
c) b=37 subtract s from each side.
a) s+22+37+s=105
a) 2s=105-59
a) 2s=46
a) s=23
b) L=23+22
b) L=45
.
Ed