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x=?
(2x-7):7+9=10
Dau coronița !


Răspuns :

() : 7 = 10 -9
(2x-7) = 1 × 7
2× = 7 +7
x = 14 : 2
x = 7
{S} = 7
(2x-7):7+9=10
(2x-7):7=10-9
(2x-7):7=1
2x-7=1x7
2x-7=7
2x=7+7
2x=14
x=14/2
x=7



Sper ca te-am ajutat ! :)