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Reduceti termenii asemenea : a) 9z+11z-8z+z b) 15a-a-5a c) 10m+3m-9m

Răspuns :

a)
9z+11z-8z+z=(9+11-8+1)z=13z
b)
15a-a-5a=(15-1-5)a=9a
c)
10m+3m-9m=(10+3-9)m=4m
9z + 11z - 8z +z = z (9+11 - 8 +1) = 13z
15a - a - 5a = a (15 - 1 - 5 ) = 9a
10m + 3 m - 9m = m(10 + 3 - 9) = 4m