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Rezolvati in N:
a)18x+27=7(2x+9)
b)37x+37=4(8x+13)


Răspuns :

a) 18x+27=14x+63

18x-14x=63-27

4x=36

x=36:4

x=9

b) 37x+37=32x+52

37x-32x=52-37

5x=15

x=15:5

x=3


a) 18x+27=7(2x+9)
18x+27=14x+63
18x-14x=63-27
4x=36/:4
x=9
b)37x+37=4(8x+13)
37x+37=32x+52
37x-32x=52-37
5x=15/:5
x=3