3(x-2)=x+2 5-2(x-1)=4-x (7x++3)=5 3.4+2y=7(y-2.3) - вопрос №32252147353427230272230369235745 от letsplei1212 03.03.2020 13:42

Question

Математика: 3(x-2)=x+2 5-2(x-1)=4-x (7x++3)=5 3.4+2y=7(y-2.3) 0.2(7-2y)=2.3-0.3(y-6) 2/3(1/3x-1/2)=4x+2 1/2 решите

letsplei1212 · Answer

1.3(x-2)=x+23x-6=x+22x=8x=42.5-2(x-1)=4-x5-2x+2=4-xx=33.(7x+1)-(9x+3)=57x+1-9x-3=5-2x=7x=-3,54. 3,4+2y=7(y-2,3)3,4+2y=7y-16,15y=19,5y=3,95. 0,2(7-2y)=2,3-0,3(y-6)1,4-0,4y=2,3-0,3y+1,82,7=-0,1yy=-27...