F(x)=(5-x)/2 и g(x)= 7-2x
1) f(3)=(5-3)/2= 1
g(3)=7-2*3= 1
1=1
f(3)=g(3)
2) f(7)= (5-7)/2= -1
g(7)= 7 - 2*7= -7
-1 > -7
f(7) > g(7)
3) f(-9)= (5-(-9))/2= (5+9)/2 = 7
g(-9)= 7-2*(-9)= 7 + 18 = 25
25 > 7
g(-9) > f(-9)
560000
- 69996
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490004
19×101=1919
25×101=2525
33×101=3333