Question 289838
b=a+10
c=2a-10
a^2+b^2=c^2
a^2+(a+10)2=(2a-10)^2
2a^2+20a+100 = 4a^2-40a+100

0=2a^2-60a
60a=2a^2
30a=a^2

a=30
b=40
c=50