State whether a given pair of terms is of like or unlike terms:

(i){tex}1,{ext{ }}100{/tex}

(ii){tex} – 7x,frac{5}{2}x{/tex}

(iii){tex} – 29x, – 29y{/tex}

(iv) {tex}14xy,42yx{/tex}

(v) {tex}4{m^2}p,4m{p^2}{/tex}

(vi) {tex}12xz,12{x^2}{z^2}{/tex

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