Question

A FS 5457
8. For any two integers x & z, which of the following suggests that operation of addition is
commutative?
1. a + I = I + a
2+ = =+ x
a + w - Wła
4 - - ir 4
1​

Answer 1

$16y1y155421 { { { {.1}^{?} }^{?} }^{?} }^{?}$