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5x-10egal 3x
15x+1egal5x+101


Răspuns :

X egal cu 5, si x egal cu 10, atașez poza
Vezi imaginea VIOGEOIONUT

5x-10=3x                 15x1=5x+101

5x-3x=10                 15x-5x=101-1

2x=10                      10x=100 

x=5                           x=10