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CLASA a VIII-a
Rezolvati In Z ecuatiile :
a) x-5 =6
b)x+7=12
c)x+8=4
d) x-8= -10


Răspuns :

a) x-5=6=> x=6+5=> x=11
b) x+7=12=> x=12-7=> x=5
c) x+8=4=> x=4-8=> x=-4
d) x-8=-10=> x=-10+8=> x=-2