1)2^5x-4=16^x+3 2)3^5x+2=81^x-1
2^5x-4=2^4(x+3) 5x-4=4x+12 5x-4x=12+4 x=16 2) 3^5x+2=3^4(x-1) 5x+2=4x-4 5x-4x=-4-2 x=-6