Question

last digit is, - 1 the senses of all

Answer 1

hey mate

here is your answer

Answer 2

$\huge\red{Answer\: is}$

$2 {}^{2x + 1} = 4 {}^{2x - 1} \\ 2 {}^{2x + 1} = 2 {}^{2(2x - 1)} \\ 2x + 1 = 4x - 2 \\ 4x - 2x = 1 + 2 \\ 2x = 3 \\ x = \frac{3}{2}$
Hope it helps you