Verify the following
(i) −125+27=27+−125
(ii) −58+−913=−913+−58
(iii) 3+−712=−712+3
(iv) 2−7+12−35=12−35+2−7
(i) L.H.S.=−125+27
=−84+1035=−7435
R.H.S.=27+−125=10−8435=−7435
∴−125+27=27+−125
(ii) L.H.S.=−58+−913=−65−72104=−137104
R.H.S.=−913+−58=−72−65104=−137104
∴−58+−913=−913+−58
(iii) L.H.S.=3+−712=36−712=2912
R.H.S.=−712+3=−7+3612=2912
∴3+−712=−712+3
(iv) L.H.S.=2−7+12−35=−27+−1235
=−10−1235=−2235
R.H.S.=12−35+2−7=−1235+−27
=−12−1035=−2235
∴2−7+12−35=12−35+2−7