than $9.)$

a$.{343}_{\text{f}\text{i}\text{v}\text{e}}-,={124}_{\text{f}\text{i}\text{v}\text{e}}$

b$.{1101}_{\text{t}\text{w}\text{o}}={1011}_{\text{t}\text{w}\text{o}}$

c$.TE{E}_{\text{t}\text{w}\text{e}\text{l}\text{v}\text{e}}-$dots$=2_{\text{t}\text{w}\text{e}\text{l}\text{v}\text{e}}$

d$.{1000}_{\text{t}\text{w}\text{o}}+={100000}_{\text{t}\text{w}\text{o}}$

a$.{343}_{\text{f}\text{i}\text{v}\text{e}}-$ ive $={124}_{\text{f}\text{i}\text{v}\text{e}}$

b$.{1101}_{\text{t}\text{w}\text{o}}-,$ two $={1011}_{\text{t}\text{w}\text{o}}$

c$.$ TEE ${?}_{\text{t}\text{w}\text{e}\text{l}\text{v}\text{e}}-$ welve $=2_{\text{t}\text{w}\text{e}\text{l}\text{v}\text{e}}$

d$.{1000}_{\text{t}\text{w}\text{o}}+$ wo $={100000}_{\text{t}\text{w}\text{o}}$