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Rezolvati in N ecuatiile:

6x+ 10 =46

15- x =9

2x - 31 =5


Răspuns :

6x=36
x=6

-x=-6
x=6

2x=36
x=36/2
x=18
6x+10=46
6x=46-10
6x=36
x=36:6
x=6

15-x=9
x=15-9
x=6

2x-31=5
2x=31+5
2x=36
x=36:2
x=18