\(5^{x+1}-4^3=13^8:(13^2\cdot13^5)+48\cdot1^{2020}\\\Rightarrow 5^{x+1}-64=13^8:13^7+48\\\Rightarrow 5^{x+1}-64=13+48\\\Rightarrow 5^{x+1}-64=61\\\Rightarrow 5^{x+1}=61+64\\\Rightarrow 5^{x+1}=125\\\Rightarrow 5^{x+1}=5^3\\\Rightarrow x+1=3\\\Rightarrow x=3-1\\\Rightarrow x=2\\Vậy:x=2.\)
5x+1 - 43 = 138 : (132.135) + 48 . 12020
5x+1 - 64 = 138 : 137+ 48 . 1
5x+1 - 64 = 131 + 48
5x+1 - 64 = 13 + 48
5x+1 = 61 + 64
5x+1 = 125
5x+1 = 53
x + 1 = 3
Tới đây tự làm =)))