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2.Calculati :
125 m+145 m-
148 7+ 177-
1 53 / - 16/=
178 cm-114 cm-
m
7
117/+ 165 /
/
19 m+156 m "
I 80 mm-117mn
132/+118 - 126/-
182 m/ - 139 m
mi
2
173/- 143 / + 166 /-
320 m+ 530 m - 550 m
E
895 m - 542 m + 200 m =
m​