Răspuns:
A) 3^26=3^x
X=26
B)5^2-4^2:3^2=x
(25-16):9=9:9=1
C)(2^5*2^7*3^7):3^7=2^x
2^12*3^0=2^x
2^12*1=2^x
2^12=2^x
X=12
D)2^6*3^10:2^4*3^6:3^2=6^x
2^2*3^2=6^x
6^2=6^x
X=2
E)4^15*8^15:4^5:2^6=2^x
4^10*2^39=2^x
2^20*2^39=2^X
2^59=2^X
X=59
F)2^(1+2+3+...50)=2^x
2^1275=2^x
X=1275
13)a)3^2+3^10*5^10:3^9*5^9-1*1=
3^2+3*10-1=9+29=38
B)4^13:8^6+7^3-5^2*5^4:(5^4+4^2:7*3^2-55)=
4^11:2^18+7^2-5^2*3^2-55=
2^22:2^18+7^2-15^2-55=
2^4+49-225-55=16+49-175=65-175=-110
C)18*(1+3^60+7^70+5^80):(1+3^60+7^70+5^80)=
18*(1+1+1+1)=18*4=72
