A-b=c => a=b+c
a+b+c=90
a+a=90
2a=90
a=45
5^х*(5-5^(-1))=24
5^х*(5-1/5)=24
5^х*(24/5)=24
5^х=24:(24/5)
5^х=5
5^х=5^1 (или х=log_5(5))
х=1.
754.219 - (342.411 - 298.657) - (902.902 - 519.986)=329.549
1) 342.411 - 298.657=43.754
2)902.902 - 519.986=382.916
3)754.219-43.754=710.465
4)710.465-382.916=327.549
11340 | 2
5670 | 2
2835 | 3
945 | 3
315 | 3
105 | 3
35 | 5
7 | 7
1
11340=2*2*3*3*3*3*5*7
7^5*x^-1/7^1 > 0
7^4*x^-1 > 0
0 < x < +бесконечность