Can you verify that my work is correct and both resulting values are positive?

1. Let A = (1110 1010)₂. What decimal value does A represent if A is a 1's complement number? As normal (binary) representation is (0001 0101)₂ if A is a 1s complement number. A = (1*2⁰) + (0*2¹) + (1*2²) + (0*2³) + (1*2⁴) + (0*2⁵) + (0*2⁶) + (0*2⁷) = 21₁₀

Let A = (1110 1010)₂. What decimal value does A represent if A is a 2's complement number? 00010101 1 ________ 00010110 => A = (0*2⁰) + (1*2¹) + (1*2²) + (0*2³) + (1*2⁴) + (0*2⁵) + (0*2⁶) + (0*2⁷) = 22₁₀