[2 (5x-7)+19]÷3-14=21
Va rog ajutatima repede
pentru clasa a 5


Răspuns :

[2 (5x-7)+19]÷3-14=21
[2(5x-7)+19]:3=21+14
2(5x-7)+19=35x3
10x-14=105-19
10x=86+14
x=100:10
x=10