Question

плизз решите уравнения
в) -3цел1/7x-2цел5/21=-4цел1/3-1цел1/21

Answer 1

-22x/7-47/21=-13/3-22/21
-66x-47/21=-39-22/21
-66x-47/21-(-39-22)/21=0
-66x-47+39+22/21=0
-66x+14=0
x=-14/-66
x=14/66
x=7/33